Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tin hieu hoc snippets" » "tim hieu hoc snippets", "van hieu hoc snippets", "tin lieu hoc snippets", "tin hieu hoa snippets", "tin tieu 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: (((("tin hieu 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: (((("tin hieu hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tin hieu hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tin hieu hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.