Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van tan du snippets" » "van tan code snippets", "van tuan du snippets", "van ban du snippets", "van tai du snippets", "van toan du snippets", "van tang du snippets", "van van du 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 tan du 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 tan du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van tan du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van tan du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.