Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"va tham cu snippets" » "van tham cu snippets", "va cham cu snippets", "va thanh cu snippets", "va tham du snippets", "va tham cung snippets", "va thai 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: (((("va tham cu 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 tham cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va tham cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va tham cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.