Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh thi xo snippets" » "trinh tai xo snippets", "trinh thiet xo snippets", "trinh tu xo snippets", "trinh thi xa snippets", "trinh thi mo 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: (((("trinh thi xo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh thi xo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh thi xo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh thi xo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.