Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc chi cua snippets" » "hoc chia cua snippets", "hoc cho cua snippets", "hoc chu cua snippets", "hoc chi cuc snippets", "hoc khi cua snippets", "hoc cuoi cua 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: (((("hoc chi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc chi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc chi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc chi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.