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