Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi chat hoc snippets" » "khi cham hoc snippets", "nghi chat hoc snippets", "khi hau hoc snippets", "khi chat hoa snippets", "khi chat thom snippets", "khi cho 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 chat 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 chat hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi chat hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi chat hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.