Perhaps you should try some spelling variations:
cua triet » su triet, va triet
nhan luc » nang luc
van hanh » van thanh, ban hanh, van anh
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
luc van » luoc van, luu van, duc van

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

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