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