Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao hang ton snippets" » "cao dang ton snippets", "cao tang ton snippets", "cao bang ton snippets", "cao hang nong snippets", "cao hang cong snippets", "cao hang tai 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: (((("cao hang ton snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao hang ton snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao hang ton snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao hang ton snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.