Perhaps you should try some spelling variations:
thien chanh » thien thanh, thien chinh, hien hanh
trang cua » tranh cua, tang cua, thang cua
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
dien anh » tieng anh, dien dan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien chanh) or (dien anh)) - hanh ((trang cua) or (trung cua)) dung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien chanh) OR (dien anh)) - hanh ((trang cua) OR (trung cua)) dung cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien chanh) or (dien anh)) - hanh ((trang cua) or (trung cua)) dung cong tac toan cao*.