Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cach thuc du snippets" » "anh thuc du snippets", "cac thu du snippets", "cach truc du snippets", "cach thuc su snippets", "cach thuc tu 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: (((("cach thuc du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cach thuc du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cach thuc du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cach thuc du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.