Perhaps you should try some spelling variations:
thien van » thi van
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
nam thuoc » nam thuc, nha thuoc, cay thuoc
lam duoc » nam duoc, luat duoc, lam thuoc
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
van cua » vang cua, ban cua, dan cua
so sac » so sach, so dac
ha hoi » hoa hoi, ha noi, xa hoi
sac ky » cac ky, sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky dang ha hoi. thien van ((lam duoc) or (((nam thuoc) OR (nam thu)))) ban thanh van cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky dang ha hoi. thien van ((lam duoc) OR (((nam thuoc) OR (nam thu)))) ban thanh van cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky dang ha hoi. thien van ((lam duoc) or (((nam thuoc) OR (nam thu)))) ban thanh van cua te".
• Adding a wildcard symbol may retrieve word variants: so sac ky dang ha hoi. thien van ((lam duoc) or (((nam thuoc) OR (nam thu)))) ban thanh van cua te*.