Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong nhat du snippets" » "cong nhat code snippets", "cong nhan du snippets", "cong ha du snippets", "cong suat du snippets", "cong nhat tu snippets", "cong nhat vu snippets", "cong nhat de 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 nhat 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 nhat du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong nhat du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong nhat du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.