Perhaps you should try some spelling variations:
thanh moi » thanh loi, thanh hoa, thanh hai
nha thuoc » nha nuoc, nhan thuc, nha hoc
va trien » va truyen, va thiet, va tuyen
va thanh » gia thanh, ban thanh, va tinh
thuoc va » thuc va, thuoc ma, thuong va
hieu va » lieu va, hieu qua
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
ha hoi » hoa hoi, xa hoi, va hoi
va nha » va nho, ve nha
moi va » hoi va, mai va, moi ve
te san » te ban, ke san, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ((ky lang) or (ky dang)) ((ha hoi) OR (ha noi)). hieu va nha thuoc va thanh moi va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ((ky lang) OR (ky dang)) ((ha hoi) OR (ha noi)). hieu va nha thuoc va thanh moi va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ((ky lang) or (ky dang)) ((ha hoi) OR (ha noi)). hieu va nha thuoc va thanh moi va trien".
• Adding a wildcard symbol may retrieve word variants: te san ((ky lang) or (ky dang)) ((ha hoi) OR (ha noi)). hieu va nha thuoc va thanh moi va trien*.