Perhaps you should try some spelling variations:
"phap luat viec nam lam nghiep" » "phap luat viet nam lam nghiep", "phap lam viec nam lam nghiep", "phap luat ve nam lam nghiep", "phap luat vien nam lam nghiep", "phap luat viec nhom lam nghiep", "phap luat viec nam nam nghiep", "phap luat viec cam lam nghiep", "phap luat viec nam lai nghiep"
"phap giam viec lam lam nghiep" » "phap giang viec lam lam nghiep", "phap nham viec lam lam nghiep", "phan giai viec lam lam nghiep", "phap gian viet lam lam nghiep", "phap lam viec lam lam nghiep", "phap giao vien lam lam nghiep", "phap giam viec va lam nghiep", "phap giam viec cam lam nghiep", "phap giam viec lam lai nghiep", "phap giam viec lam lanh nghiep"

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: (("phap luat viec nam lam nghiep") or ("phap giam viec lam lam nghiep"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("phap luat viec nam lam nghiep") OR ("phap giam viec lam lam nghiep")).
• Removing quotes may allow a broader search: (( phap luat viec nam lam nghiep ) or ( phap giam viec lam lam nghiep )).
• Adding a wildcard symbol may retrieve word variants: (("phap luat viec nam lam nghiep") or ("phap giam viec lam lam nghiep"))*.