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