Perhaps you should try some spelling variations:
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
hanh han » hanh nhan, hanh phan, hanh san
cua bang » chua bang, cua ban, cua dang
cong dan » cong san, cong tan, cong dong
toan cau » toan cao, toan ban, toan tap
han cua » hang cua, nhan cua, than cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - hanh han cua bang ((cong dan) or (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh han cua bang ((cong dan) OR (huong dan)) toan cau*.