Perhaps you should try some spelling variations:
thanh tung » thanh cong
tuan thong » toan thong, tran thong, tuan phong
thong cong » trong cong, tong cong, thong thong
tung tuan » trung tuan, hung tuan, quang tuan
khi danh » chi danh, kho danh, khao danh
tap toan » tap quan, bai toan
tap doan » tap quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi khi danh - thanh tung tuan thong cong ((tap toan) or (tap doan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi khi danh - thanh tung tuan thong cong ((tap toan) OR (tap doan)) cao.
• Adding a wildcard symbol may retrieve word variants: doi khi danh - thanh tung tuan thong cong ((tap toan) or (tap doan)) cao*.