Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong vinh ve snippets" » "cong vinh code snippets", "cong trinh ve snippets", "trong vinh ve snippets", "cong viec ve snippets", "cong dinh ve snippets", "cong kinh ve snippets", "cong minh ve 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: (((("cong vinh 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: (((("cong vinh ve snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong vinh ve snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong vinh ve snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.