Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi hang so snippets" » "thi hanh so snippets", "thi nang so snippets", "thi hong so snippets", "thi hang son snippets", "thi hoang son snippets", "thi hang hoa 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: (((("thi hang so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi hang so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi hang so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi hang so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.