Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van ngoc ca snippets" » "van ngoc code snippets", "tran ngoc ca snippets", "van hoc ca snippets", "van nghe ca snippets", "van ngoc ha snippets", "van ngoc chau snippets", "van ngoc canh 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: (((("van ngoc ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van ngoc ca snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van ngoc ca snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van ngoc ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.