Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thong ve doi snippets" » "thong ke doi snippets", "thong va doi snippets", "thong le doi snippets", "thong te doi snippets", "thong ve do 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: (((("thong ve 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: (((("thong ve doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong ve doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong ve doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.