Perhaps you should try some spelling variations:
"co theo chieu snippets" » "co theo code snippets", "co theo tieu snippets", "co ho chieu snippets", "co theo chu snippets", "cuon theo chieu snippets", "cau theo chieu snippets", "hoa theo chieu snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("co theo chieu snippets") OR ("python using sat snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"co theo chieu snippets\") OR (\"python using sat snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( co theo chieu snippets ) OR ( python using sat snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co theo chieu snippets") OR ("python using sat snippets"))) OR ("locating bug core snippets"))*.