Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duy phan cac snippets" » "duy phan code snippets", "duc phan cac snippets", "dung phan cac snippets", "duy khanh cac snippets", "duy nhan cach snippets", "duy phan dau snippets", "duy phan lap 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: (((("duy phan cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duy phan cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( duy phan cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duy phan cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.