Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
dang xay » dang van, van xay
nhan tuc » nhan thuc, nhan luc, nhanh thuc
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
hieu vu » hieu va, hieu ve, hieu su
vu nhan » cu nhan, vu ngan, tu nhan
va hanh » van hanh, va thanh, va danh
tuc va » thuc va, truc va, tuc xa

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 y ((nang ma) or (dang xay)) hoi. hieu vu nhan tuc va hanh lai chau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang ma) OR (dang xay)) hoi. hieu vu nhan tuc va hanh lai chau triet.
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang ma) or (dang xay)) hoi. hieu vu nhan tuc va hanh lai chau triet*.