Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lay » thanh lap, thanh tay, thanh lam
nam thuc » nam thuoc, am thuc, nam thu
dua tren » dung tren
va thanh » gia thanh, ban thanh, va tinh
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua thep
vu sach » vu bach, su sach, vu khach
ve nam » he nam, va nam, le nam
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang x hoi. hieu ve nam thuc va thanh lay ((((cua tre) OR (dua tren))) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. hieu ve nam thuc va thanh lay ((((cua tre) OR (dua tren))) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang x hoi. hieu ve nam thuc va thanh lay ((((cua tre) OR (dua tren))) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x hoi. hieu ve nam thuc va thanh lay ((((cua tre) OR (dua tren))) or (cua triet))*.