Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach thu le snippets" » "sach thue le snippets", "sach thieu le snippets", "sach tham le snippets", "sach thu les snippets", "sach thu xe snippets", "sach tu le 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: (((("sach thu le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach thu le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach thu le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach thu le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.