Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"va quoc doi snippets" » "va cuoc doi snippets", "va quoc hoi snippets", "va luoc doi snippets", "va duoc doi snippets", "han quoc doi 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: (((("va quoc doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va quoc doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va quoc doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va quoc doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.