Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chau van toi snippets" » "chau van code snippets", "chu van toi snippets", "chao van toi snippets", "pham van toi snippets", "chau van tai snippets", "chau van thi snippets", "chau van toan snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data 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: (((("chau van toi snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chau van toi snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chau van toi snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chau van toi snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.