Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
cham tuc » nham thuc, pham thuc, tham thuc
su sach » so sach, vu sach
su tien » su kien, su hien, tu tieng
tuc ban » thuc ban, truc ban, tu ban
va cham » va chat, va tham
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, mang may
sach v » sach va, sach y, sach 2
thiet » thieu

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 v ((nang ma) or (nang cao)) hoi. hieu va cham tuc ban thanh vi ((su tien) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v ((nang ma) OR (nang cao)) hoi. hieu va cham tuc ban thanh vi ((su tien) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: su sach v ((nang ma) or (nang cao)) hoi. hieu va cham tuc ban thanh vi ((su tien) or (va thiet))*.