Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"nao hoi cau snippets" » "nao hoi code snippets", "nam hoi cau snippets", "tao hoi cau snippets", "nao noi cau snippets", "nao hoi chu snippets", "nao hoc cau snippets", "nao hoa cau 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: (((("nao hoi cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao hoi cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("nao hoi cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.