Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc trau cua snippets" » "hoc tap cua snippets", "hoc tu cua snippets", "hoc tai cua snippets", "hoc tru cua snippets", "hoc tranh 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 trau 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 trau cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc trau cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc trau cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.