Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"theo dan hoc snippets" » "tho dan hoc snippets", "theo dau hoc snippets", "theo don hoc snippets", "theo van hoc snippets", "theo dan toc snippets", "theo dai hoc 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: (((("theo dan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("theo dan hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( theo dan hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("theo dan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.