Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"viet doi cua snippets" » "viet doi code snippets", "viet duoi cua snippets", "viet voi cua snippets", "nhiet doi cua snippets", "viet hoi cua snippets", "viet dai cua snippets", "viet dong cua 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: (((("viet doi cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet doi cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( viet doi cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet doi cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.