Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
cham tuc » nham thuc, pham thuc, tham thuc
thanh vi » hanh vi, thanh va, thanh ve
va trien » va truyen, va thiet, va tuyen
su sach » so sach, vu sach
hang ma » hang va, hang ca, nang ma
tang ma » mang may, tang van
tuc gia » tac gia, duc gia, toc gia
vi va » vi van, vai va, vu va

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 thieu ((hang ma) or (tang ma)) hoi. hieu qua cham tuc gia thanh vi va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thieu ((hang ma) OR (tang ma)) hoi. hieu qua cham tuc gia thanh vi va trien.
• Adding a wildcard symbol may retrieve word variants: su sach thieu ((hang ma) or (tang ma)) hoi. hieu qua cham tuc gia thanh vi va trien*.