Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chao van doc snippets" » "chao van code snippets", "cao van doc snippets", "hao van doc snippets", "thao van doc snippets", "chao van duoc snippets", "chao van hoc snippets", "chao van loc snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("chao van doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chao van doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chao van doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chao van doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.