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