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