Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc dung cu snippets" » "toc dung code snippets", "hoc dung cu snippets", "tac dung cu snippets", "toc nung cu snippets", "toc dung cua snippets", "toc dung co snippets", "toc dung cho 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: (((("toc dung cu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc dung cu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc dung cu snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc dung cu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.