Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"gian van doc snippets" » "gian van code snippets", "giang van doc snippets", "gian dan doc snippets", "gian lan doc snippets", "gian van duoc snippets", "gian van hoc snippets", "gian 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: (((("gian 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: (((("gian van doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( gian van doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian van doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.