Perhaps you should try some spelling variations:
"phap luat viec lam lam nghiep" » "phap luat viet lam lam nghiep", "phap lam viec lam lam nghiep", "phap luat ve lam lam nghiep", "phap luat viec va lam nghiep", "phap luat viec cam lam nghiep", "phap luat viec lam lai nghiep", "phap luat viec lam lanh nghiep"
"phap giam viec nam lam nghiep" » "phap giang viec nam lam nghiep", "phap nham viec nam lam nghiep", "phan giai viec nam lam nghiep", "phap gian viet nam lam nghiep", "phap lam viec nam lam nghiep", "phap giao vien nam lam nghiep", "phap giam viet nam lam nghiep", "phap giam vien nam lam nghiep", "phap giam viec nhom lam nghiep", "phap giam viec nam nam nghiep", "phap giam viec cam lam nghiep", "phap giam viec nam lai 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 lam lam nghiep") or ("phap giam viec nam lam nghiep"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("phap luat viec lam lam nghiep") OR ("phap giam viec nam lam nghiep")).
• Removing quotes may allow a broader search: (( phap luat viec lam lam nghiep ) or ( phap giam viec nam lam nghiep )).
• Adding a wildcard symbol may retrieve word variants: (("phap luat viec lam lam nghiep") or ("phap giam viec nam lam nghiep"))*.