Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi quoc ve snippets" » "thu quoc ve snippets", "tai quoc ve snippets", "thi nuoc ve snippets", "thi quoc te snippets", "thi quoc va 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: (((("thi quoc ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi quoc ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi quoc ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi quoc ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.