Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
nhan luc » nang luc
van hanh » van thanh, ban hanh, van anh
tai hoi » tai khoi, dai hoi, tai hai
hieu ve » hieu va, hieu van
ve nhan » ve nha, de nhan, va nhan
cua tre » cuu tre, cua triet, dua tren
va dan » ca dan, va dao, va dau
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
cua te » cua tu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang tai hoi. hieu ve nhan luc ((van hanh) OR (va dan)) dai ((cua tre) OR (cua te))~.
• Adding a wildcard symbol may retrieve word variants: tu san ky nang tai hoi. hieu ve nhan luc ((van hanh) or (va dan)) dai ((cua tre) or (cua te))*.