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