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