Perhaps you should try some spelling variations:
"cua dau tranh snippets" » "cua can tranh snippets", "cua dau tren snippets", "cua dau trong snippets", "chua dau tranh snippets", "cua dan tranh snippets", "cua dai tranh snippets"
"python using a slippers" » "python using a slippery", "python using a grippers"
"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: (((("cua dau tranh snippets") or ("python using a slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua dau tranh snippets") OR ("python using a slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua dau tranh snippets ) or ( python using a slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua dau tranh snippets") or ("python using a slippers"))) or ("locating bug code snippets"))*.