Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
thanh vai » thanh hai, thanh van, thanh tai
nhan luc » nang luc
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang ma » tang ma, nang ma, sang ma
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
ca viet » va viet, co viet, hoa viet
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty xang ma hoa. hieu va nhan luc va ((thanh vai) or (thanh toan)) ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang ma hoa. hieu va nhan luc va ((thanh vai) OR (thanh toan)) ca viet.
• Adding a wildcard symbol may retrieve word variants: su sach ty xang ma hoa. hieu va nhan luc va ((thanh vai) or (thanh toan)) ca viet*.