Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"danh dai hoc snippets" » "danh dai code snippets", "danh dau hoc snippets", "danh di hoc snippets", "danh sai 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: (((("danh dai 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: (((("danh dai hoc snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( danh dai hoc snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh dai hoc snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.