Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thap du doc snippets" » "thap duy doc snippets", "thap du hoc snippets", "thap nu doc snippets", "phap du doc snippets", "tap du doc snippets", "than du doc 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: (((("thap du doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thap du doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thap du doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thap du doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.