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