Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc dan canh snippets" » "duc dan code snippets", "duc van canh snippets", "duc dan cach snippets", "duc dan hanh snippets", "duoc dan canh snippets", "duc tan canh snippets", "duc dai 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: (((("duc dan 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: (((("duc dan canh snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( duc dan canh snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc dan canh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.