Perhaps you should try some spelling variations:
thuoc doanh » thuoc dang, thuoc dong, thuoc thanh
doanh khoa » toan khoa
tri thuoc » tri thuc, tri hoc, tin thuoc
khoa khoi » khoa hoi, khoa khoa, thoat khoi
cach thoi » cac thoi, cach thuc, cach noi
cach hoan » cac khoan, hach toan, sach han
sach tri » sach tai, sach tren, sach truc
su sach » so sach, vu sach
tu cach » tu cac
thoi ve » hoi ve, thoi va, thong ve
ve cach » va cach, ve cac, ve canh
hoan he » hoa he, toan he, hoan thue
khong » phong
thong » trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach tri thuoc doanh khoa khoi khong ) or ( tu cach thoi ve cach hoan he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach tri thuoc doanh khoa khoi khong ) OR ( tu cach thoi ve cach hoan he thong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach tri thuoc doanh khoa khoi khong ) or ( tu cach thoi ve cach hoan he thong ))*.