Perhaps you should try some spelling variations:
va thuoc » va thuc, va thuong, nha thuoc
van hanh » van thanh, ban hanh, van anh
nang lai » nang tai, mang lai, nang cai
sach ly » sach y, sach lo, sach ty
luc van » luoc van, luu van, duc van
va cham » va chat, va tham
su sach » so sach, vu sach
lai hoi » dai hoi, lai hoa, lai roi
ly nang » ky nang, ly hang, ly vang
ve cam » ve cham, ve cac, va cam
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 sach ly nang lai hoi. hieu ((ve cam) or (va cham)) luc van hanh vi ((cua tu) or (va thuoc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang lai hoi. hieu ((ve cam) OR (va cham)) luc van hanh vi ((cua tu) OR (va thuoc)).
• Adding a wildcard symbol may retrieve word variants: su sach ly nang lai hoi. hieu ((ve cam) or (va cham)) luc van hanh vi ((cua tu) or (va thuoc))*.