Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cheng thi da snippets" » "phung thi da snippets", "chinh thi da snippets", "phong thi da snippets", "cheng thi dai snippets", "cheng thi dua snippets", "cheng thi dan 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: (((("cheng thi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cheng thi da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cheng thi da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cheng thi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.