Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son dua voi snippets" » "son da voi snippets", "song cua voi snippets", "song qua voi snippets", "son dua moi snippets", "son sua voi 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: (((("son dua voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("son dua voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son dua voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son dua voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.