Perhaps you should try some spelling variations:
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"knowledge extraction in java programming" » "knowledge construction in java programming" (Expand search), "knowledge production in java programming" (Expand search), "knowledge creation in java programming" (Expand search), "knowledge extraction in and programming" (Expand search), "knowledge extraction in based programming" (Expand search), "knowledge extraction in goal programming" (Expand search), "knowledge extraction and java programming" (Expand search), "knowledge extraction in japan programming" (Expand search), "knowledge extraction in jatai programming" (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"knowledge extraction in java programming\") OR (\"advanced python python computer programming\"))~".
• Removing quotes may allow a broader search: (( knowledge extraction in java programming ) OR ( advanced python python computer programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("knowledge extraction in java programming") OR ("advanced python python computer programming"))*.