Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cho moi deu snippets" » "cho moi code snippets", "khoe moi deu snippets", "cho moi dieu snippets", "cho doi deu snippets", "cho moi de 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: (((("cho moi deu snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho moi deu snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cho moi deu snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho moi deu snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.