Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong xay du snippets" » "cong xay code snippets", "thong xay du snippets", "trong xay du snippets", "cong ty du snippets", "cong day du snippets", "cong tay du snippets", "cong xay dung 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: (((("cong xay du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong xay du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong xay du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong xay du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.