Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"lich dan hoc snippets" » "lich dan code snippets", "lich danh hoc snippets", "lich can hoc snippets", "lich han hoc snippets", "lich van hoc snippets", "lich dan toc snippets", "lich dai hoc 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: (((("lich dan hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lich dan hoc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( lich dan hoc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lich dan hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.