Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao hanh cua snippets" » "dao hanh cua snippets", "bao hanh cua snippets", "khao nhanh cua snippets", "hao manh cua snippets", "hao hang cua snippets", "hao hanh sua 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: (((("hao hanh 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: (((("hao hanh cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao hanh cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao hanh cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.