Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu va cua snippets" » "lieu va cua snippets", "hieu qua cua snippets", "hieu va chua snippets", "hieu via cua snippets", "hieu ca 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: (((("hieu va 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: (((("hieu va cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu va cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu va cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.