Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tra cua chi snippets" » "tra cua code snippets", "trau cua chi snippets", "trua cua chi snippets", "tra cuu chi snippets", "tra cua chu snippets", "tra ca chi snippets", "tra cua cha 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: (((("tra cua chi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tra cua chi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tra cua chi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra cua chi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.