Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi van canh snippets" » "doi van code snippets", "doi van anh snippets", "doi van hanh snippets", "doi van manh snippets", "do van canh snippets", "doi va canh snippets", "doi ban 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: (((("doi van canh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi van canh snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi van canh snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi van canh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.