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