Perhaps you should try some spelling variations:
"nhat ve cham snippets" » "nhat ve code snippets", "nhat va cham snippets", "nhat ve chat snippets", "nhat vu cham snippets", "nhan ve cham snippets"
"locating bug core snippets" » "locating bug code 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: (((("nhat ve cham snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhat ve cham snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( nhat ve cham snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat ve cham snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.