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