Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong cac voi snippets" » "duong cac voi snippets", "dong bac voi snippets", "dung cac voi snippets", "dong cac toi snippets", "dong cac vi snippets", "dong cac moi 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: (((("dong cac 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: (((("dong cac voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cac voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cac voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.