Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan lanh voi snippets" » "lan anh voi snippets", "lan oanh voi snippets", "lam lanh voi snippets", "lan hanh voi snippets", "lan hanh vi snippets", "lan lanh hai 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: (((("lan lanh voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan lanh voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan lanh voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan lanh voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.