Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh tung » thanh cong
thong bang » hong bang, thong mang, thong nang
cua thong » cua thuong, cua khong, cua tong
bang hang » ban hang, hang hang, nang hang
tung cua » trung cua, tuong cua, dung cua
hang cau » hang dau, hang ca, nhung cau

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 thanh) or (dieu hanh)) - thanh tung cua thong thong bang hang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (dieu hanh)) - thanh tung cua thong thong bang hang cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (dieu hanh)) - thanh tung cua thong thong bang hang cau*.