Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chai van cua snippets" » "chi van cua snippets", "thai van cua snippets", "hai van cua snippets", "chai vang cua snippets", "chai ban cua snippets", "chai dan 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: (((("chai van 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: (((("chai van cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chai van cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chai van cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.