Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh thi ve snippets" » "trinh tai ve snippets", "trinh thiet ve snippets", "trinh tu ve snippets", "trinh thi vu snippets", "trinh thi le snippets", "trinh thi va 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 ve 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 ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh thi ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh thi ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.