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