Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"kiem tao cau snippets" » "kiem tao code snippets", "kien tao cau snippets", "kiem toan cau snippets", "kiem tra cau snippets", "kiem tao cu snippets", "kiem tao cao snippets", "kiem tao sau 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: (((("kiem tao cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kiem tao cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( kiem tao cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kiem tao cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.