Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac mao can snippets" » "khac mo can snippets", "khac manh can snippets", "khac hau can snippets", "khac mao van snippets", "khac mao con snippets", "khac mat 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: (((("khac mao can 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 mao can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac mao can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac mao can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.