Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hao van ton snippets" » "hao van code snippets", "dao van ton snippets", "ho van ton snippets", "cao van ton snippets", "hao van toan snippets", "hao van tan snippets", "hao van toi 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: (((("hao van ton snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hao van ton snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hao van ton snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao van ton snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.