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