Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac gian ve snippets" » "khac gan ve snippets", "khac duan ve snippets", "khan gia ve snippets", "khac gian viet 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: (((("khac gian 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: (((("khac gian ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac gian ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac gian ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.