Perhaps you should try some spelling variations:
lam truoc » lam thuoc, nam truoc, lam truong
chua tre » chua tri, cua tre, chua trieu
vi chua » va chua, vi khuan, chi chua
va danh » va dinh, va dan, dia danh
tang ma » mang may, tang van
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, ban hanh
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky
ve lam » va lam, de lam, se lam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sai ky) or (sac ky)) tang ma hoi. hieu ve lam truoc ((va hanh) OR (va danh)) vi chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sai ky) OR (sac ky)) tang ma hoi. hieu ve lam truoc ((va hanh) OR (va danh)) vi chua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sai ky) or (sac ky)) tang ma hoi. hieu ve lam truoc ((va hanh) OR (va danh)) vi chua tre*".