Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"when ho viet snippets" » "hen ho viet snippets", "when hoc viet snippets", "when hoa viet snippets", "when tho viet snippets", "when ho viet slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("when ho viet snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("when ho viet snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( when ho viet snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("when ho viet snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.