Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
dang dinh » dang sinh, dang hanh
tang lai » trang lai, tang tai, tang loi
vai cua » dai cua, hai cua, lai cua
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach ty, sach kem
hieu ve » hieu va, hieu van
lai hoi » dai hoi, lai hoa, lai roi
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: thu ((sach ky) or (sach y)) tang lai hoi. hieu ve cham thuc ((dang dinh) or (dang dieu)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach y)) tang lai hoi. hieu ve cham thuc ((dang dinh) OR (dang dieu)) vai cua te.
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sach y)) tang lai hoi. hieu ve cham thuc ((dang dinh) or (dang dieu)) vai cua te*.