Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dung tren » dung trong, dung trung
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
cam luc » cam xuc, cau luc
hieu ve » hieu va, hieu van
tu nang » tru nang, tu nong, tu nano
luc van » luoc van, luu van, duc van
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho

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 sach tu nang x hoi. hieu ve cam luc van hanh tai ((((dua tren) OR (dung tren))) OR (cua triet))~.
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang x hoi. hieu ve cam luc van hanh tai ((((dua tren) or (dung tren))) or (cua triet))*.