Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"nhung cau de snippets" » "nhung cau code snippets", "chung cu de snippets", "nhung bai de snippets", "nhu cau de snippets", "nhung cau den snippets", "nhung cau do snippets", "nhung cuu 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: (((("nhung cau de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhung cau de snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( nhung cau de snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung cau de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.