Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nong tinh le snippets" » "cong tinh le snippets", "dong tinh le snippets", "long tinh le snippets", "nong thinh le snippets", "nong trinh le snippets", "nong dinh 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: (((("nong tinh 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: (((("nong tinh le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nong tinh le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nong tinh le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.