Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
dung dai » duong dai, dung tai, dung dat
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
van hoi » van hoc, van hoe, van loi
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va dung » van dung, va duong, vat dung
tuc va » thuc va, truc va, tuc xa
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: vu sach ky lang ((van hoi) OR (van hoa)). hieu va cham tuc va dung dai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky lang ((van hoi) OR (van hoa)). hieu va cham tuc va dung dai cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ky lang ((van hoi) OR (van hoa)). hieu va cham tuc va dung dai cua te*.