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