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