Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan sua voi snippets" » "ban sua voi snippets", "tan sua voi snippets", "hanh sua voi snippets", "lan sua doi snippets", "lan dua voi snippets", "lan su voi 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 sua 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 sua voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan sua voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan sua voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.