Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cua huy toan snippets" » "cua huy code snippets", "cua huy tran snippets", "cua huu toan snippets", "cua huy hoang snippets", "qua huy toan snippets", "cua nhua toan snippets", "cua chua toan 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: (((("cua huy toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua huy toan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cua huy toan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua huy toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.