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