Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hau vung doi snippets" » "hau vuong doi snippets", "thai vung doi snippets", "chau hung doi snippets", "hau dung doi snippets", "hau vong doi snippets", "hau vung dong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("hau vung doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hau vung doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("hau vung doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.