Perhaps you should try some spelling variations:
"chua van trinh snippets" » "chua van thinh snippets", "chua van tinh snippets", "chua dan trinh snippets", "chuan van trinh snippets", "chu van trinh snippets", "chua va trinh snippets", "chua van trinh 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 van trinh 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 van trinh snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chua van trinh snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chua van trinh snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.