Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
trung cua » truong cua, trung tuan, trung cap
tang luan » dung luan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
theo ho » theo hop, theo bo, tho ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ho manh - hanh ((trung cua) or (tang luan)) thong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ho manh - hanh ((trung cua) OR (tang luan)) thong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ho manh - hanh ((trung cua) or (tang luan)) thong cong tac toan cau*.