Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi mon hoc snippets" » "thi mon hoc snippets", "khi con hoc snippets", "khi mo hoc snippets", "khi toan hoc snippets", "khi dong 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: (((("khi mon 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: (((("khi mon hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi mon hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi mon hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.