Perhaps you should try some spelling variations:
dang mam » dang nam, dang mau, dang mat
hieu van » hieu va, thien van, lieu va
hau truc » cau truc, hang truc, hoc truc
te sach » toc sach
va danh » va dinh, va dan, va hanh
cua tre » cuu tre, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
van hau » van ha, van hai, van dau
mam hoi » mam hoai, nam hoi, mai hoi
ky dang » ky nang, ky danh
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky dang mam hoi. hieu van hau truc ((va danh) or (gia thanh)) tai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang mam hoi. hieu van hau truc ((va danh) OR (gia thanh)) tai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach ky dang mam hoi. hieu van hau truc ((va danh) or (gia thanh)) tai ((cua tre) or (cua te))*.