Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nhan luc » nang luc
va triet » va thiet, va trien, ve triet
van hanh » van thanh, ban hanh, van anh
tu tieng » luc tieng, tu tuong, tu trong
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
luc van » luoc van, luu van, duc van
sach ky » sac ky, sach y, sach ty
su tien » su kien, su hien, dau tien
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang x hoi. hieu va nhan luc van hanh vi ((va triet) or (((su tien) or (tu tieng))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang x hoi. hieu va nhan luc van hanh vi ((va triet) OR (((su tien) OR (tu tieng)))).
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang x hoi. hieu va nhan luc van hanh vi ((va triet) or (((su tien) or (tu tieng))))*.