Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hoc thieu » toc thieu, hoc hien
cong cong » cong dong, trong cong, dung cong
trinh han » trinh quan
hanh han » hanh nhan, hanh phan, hanh san
han cua » hang cua, nhan cua, than cua
han cau » hang cau, phan cau, van cau

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 (hoc thieu)) tinh - hanh han cua cong cong trinh han cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (hoc thieu)) tinh - hanh han cua cong cong trinh han cau.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (hoc thieu)) tinh - hanh han cua cong cong trinh han cau*.