Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don voi con snippets" » "dong voi con snippets", "doi voi con snippets", "don vi con snippets", "don voi cong snippets", "don voi chon snippets", "don voi can 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: (((("don voi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don voi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don voi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don voi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.