Perhaps you should try some spelling variations:
khong thong » thong thong, khong trong, thong thuong
hanh trung » thanh trung, hanh trang, manh trung
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung tuan, trung cap
cua khong » hua khong, cua phuong, cua thuong
thong van » trong van, thong va, thong quan
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc hien)) tinh - hanh trung cua khong thong van ((than cao) OR (than cap))~.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc hien)) tinh - hanh trung cua khong thong van ((than cao) or (than cap))*.