Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van hai ca snippets" » "van hai code snippets", "van ha ca snippets", "van chat ca snippets", "van hanh ca snippets", "van hai cua snippets", "van hai ba snippets", "van bai ca 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 hai ca 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 hai ca snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van hai ca snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hai ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.