Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chap hai cua snippets" » "chan hai cua snippets", "chat thai cua snippets", "chap phap cua snippets", "chap thai cua snippets", "chap hoi cua snippets", "chap dai cua 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: (((("chap hai cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chap hai cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chap hai cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chap hai cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.