Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chap dac cho snippets" » "chap dac code snippets", "chap dat cho snippets", "phap day cho snippets", "pham dac cho snippets", "chap day cho snippets", "chap danh cho snippets"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("chap dac cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chap dac cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chap dac cho snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chap dac cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.