Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tho cua voi snippets" » "thao cua voi snippets", "tho ca voi snippets", "tro cua voi snippets", "tho chua voi snippets", "tho cua vi snippets", "tho cua hoi 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: (((("tho cua 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: (((("tho cua voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tho cua voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tho cua voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.