Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thanh loi » thanh hoa, thanh lap
thanh hai » thanh phan, thanh hoa, thanh san
thuoc va » thuc va, thuoc ma, thuong va
va trien » va truyen, va thiet, va tuyen
hieu va » lieu va, hieu qua
ky lang » ky dang, ky tang, tay lang
va nam » van nam, ha nam, va nay
ha hoi » hoa hoi, ha noi, xa hoi
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 nang)) ha hoi. hieu va nam thuoc va ((thanh hai) or (thanh loi)) va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ((ky lang) OR (ky nang)) ha hoi. hieu va nam thuoc va ((thanh hai) OR (thanh loi)) va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ((ky lang) OR (ky nang)) ha hoi. hieu va nam thuoc va ((thanh hai) or (thanh loi)) va trien".
• Adding a wildcard symbol may retrieve word variants: te san ((ky lang) OR (ky nang)) ha hoi. hieu va nam thuoc va ((thanh hai) or (thanh loi)) va trien*.