Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tue hieu cua snippets" » "tue sieu cua snippets", "thuc hieu cua snippets", "quen hieu cua snippets", "tue hieu qua snippets", "tue dieu cua snippets", "tue bieu 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: (((("tue hieu 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: (((("tue hieu cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tue hieu cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tue hieu cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.