Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van canh chi snippets" » "van anh chi snippets", "van hanh chi snippets", "van manh chi snippets", "van banh chi snippets", "van can chi snippets", "van canh cha 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: (((("van canh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van canh chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van canh chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van canh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.