Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
theo chieu » theo tieu, ho chieu, thi chieu
thong cong » trong cong, tong cong, thong thong
trinh han » trinh quan
han thong » han thuong, hang thong, nhan thong
theo chu » cho chu, chao chu, theo yeu
cong san » cong tac
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (theo chu)) tinh - hanh trinh han thong cong san ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) tinh - hanh trinh han thong cong san ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) tinh - hanh trinh han thong cong san ((toan cao) or (toan ban))*.