Perhaps you should try some spelling variations:
nha thuoc » nha nuoc, nhan thuc, nha hoc
thien van » thi van
nam duoc » nam thuoc, da duoc, dat duoc
hang ban » hang luan, hang va, hang tai
ban hang » ngan hang
hoa hoi » khoa hoi, hoa doi, hoc hoi
ban cua » ban quan
ky dang » ky nang, ky danh
so cac » sao cac, so cap, o cac
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 cac ky dang ((hoa hoi) OR (hoa hoc)). thien van ((nam duoc) or (nha thuoc)) ban hang ban cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so cac ky dang ((hoa hoi) OR (hoa hoc)). thien van ((nam duoc) OR (nha thuoc)) ban hang ban cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so cac ky dang ((hoa hoi) OR (hoa hoc)). thien van ((nam duoc) or (nha thuoc)) ban hang ban cua te".
• Adding a wildcard symbol may retrieve word variants: so cac ky dang ((hoa hoi) OR (hoa hoc)). thien van ((nam duoc) or (nha thuoc)) ban hang ban cua te*.