Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cho viet some snippets" » "cho viet code snippets", "cho viet song snippets", "co viet some snippets", "tho viet some snippets", "ho viet some snippets"
"python using raw snippets" » "python using real snippets", "python using a snippets", "python using low 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 viet some snippets") or ("python using raw snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho viet some snippets") OR ("python using raw snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cho viet some snippets ) or ( python using raw snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho viet some snippets") or ("python using raw snippets"))) or ("locating bug core snippets"))*.