Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoi viet cua snippets" » "hoi viet code snippets", "hai viet cua snippets", "oi viet cua snippets", "thai viet cua snippets", "hoi viec cua snippets", "hoi viet ca snippets", "hoi viet qua 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: (((("hoi viet 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: (((("hoi viet cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hoi viet cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi viet cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.