Perhaps you should try some spelling variations:
"coder zhang ying precoder program" » "coder zhang ying proder program" (Expand search), "coder zhang ying recovery program" (Expand search), "coder zhang ying precoce programa" (Expand search), "coder zhang mimo precoder program" (Expand search), "coder zhang and precoder program" (Expand search), "coder zhang jing precoder program" (Expand search), "coder zhang yi precoder program" (Expand search), "coder zhang yuxiong precoder program" (Expand search), "poder zhang ying prepoder program" (Expand search), "codes zhang ying precodes program" (Expand search), "coded zhang ying precoded program" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder zhang ying precoder program") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder zhang ying precoder program\") OR (\"in python python python programming\"))".
• Removing quotes may allow a broader search: (( coder zhang ying precoder program ) OR ( in python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder zhang ying precoder program") OR ("in python python python programming"))*.