Perhaps you should try some spelling variations:
dang mat » dang vat, dang mau, dung mat
gian cua » gian xu, ban cua
thuc cua » hoc cua, thuc va
van phap » ban phap, va phap, van phan
thuc cao » thuoc cao, thuc co, thuc can
thi van » thi lan, thi hanh, thi nang
dang ma » dang mau, dang mam, tang ma
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((dang ma) or (dang mat)) hoi. thi van phap ((thuc cao) or (thuc cua)) dan gian cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((dang ma) OR (dang mat)) hoi. thi van phap ((thuc cao) OR (thuc cua)) dan gian cua tu.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((dang ma) or (dang mat)) hoi. thi van phap ((thuc cao) or (thuc cua)) dan gian cua tu*.