Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoi phan vo snippets" » "hoi phan code snippets", "phoi phan vo snippets", "hoc phan vo snippets", "hoa phan vo snippets", "hoi phan bo snippets", "hoi phan co snippets", "hoi phan va 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: (((("hoi phan vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi phan vo snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hoi phan vo snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi phan vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.