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