Perhaps you should try some spelling variations:
"creating nam viet snippets" » "creating a viet snippets", "creating pham viet snippets", "creating lam viec snippets", "creating bac viet snippets", "creating nam viet slippers"
"creating _ a snippets" » "creating _ 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: (((("creating nam viet snippets") or ("creating _ a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("creating nam viet snippets") OR ("creating _ a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( creating nam viet snippets ) or ( creating _ a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("creating nam viet snippets") or ("creating _ a snippets"))) or ("locating bug code snippets"))*.