Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang dich » hoang dinh, van dich, ban dich
hieu van » hieu va, thien van, lieu va
cam truc » cau truc, nam truc, lam truoc
hang vi » hang va, hanh vi, hang di
truc va » thuc va, thuc vat, trung va
su sach » so sach
nang ma » tang ma, sang ma, nang cao
vu sach » vu bach, vu khach
van cam » van nam, van lam, van cau
ma hoi » mai hoi, xa hoi, ma hoa

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) OR (vu sach)) ky nang ma hoi. hieu van cam truc va ((hang dich) or (hang vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang ma hoi. hieu van cam truc va ((hang dich) OR (hang vi)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ky nang ma hoi. hieu van cam truc va ((hang dich) or (hang vi)) cua triet*".