Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
hau truc » cau truc, hang truc, hoc truc
tu cach » tu cac
vu sach » vu bach, su sach, vu khach
nang ma » tang ma, sang ma, nang cao
van hau » van ha, van hai, van dau
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
ma hoi » mai hoi, xa hoi, ma hoa
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (vu sach)) ky nang ma hoi. thien van hau truc va hanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (vu sach)) ky nang ma hoi. thien van hau truc va hanh va cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (vu sach)) ky nang ma hoi. thien van hau truc va hanh va cua triet*.