Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tim cho hoc snippets" » "tim ho hoc snippets", "tim chuot hoc snippets", "hiem cho hoc snippets", "tim co hoc snippets", "tim khoa 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: (((("tim cho 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: (((("tim cho hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tim cho hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tim cho hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.