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