Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van lang son snippets" » "van lang code snippets", "van nang son snippets", "va lang son snippets", "van hang son snippets", "van nang song snippets", "van bang song snippets", "van anh son 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: (((("van lang son snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van lang son snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van lang son snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van lang son snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.