Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
dang cong » dung cong
hanh han » hanh nhan, hanh phan, hanh san
cua dang » cua cong, cua ban
van tuan » van quan, van ban
ho hieu » ho chieu, hoi hieu, nho hieu
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: ho hieu lang - hanh han cua dang cong ((((tinh toan) or (anh tuan))) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh han cua dang cong ((((tinh toan) OR (anh tuan))) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh han cua dang cong ((((tinh toan) or (anh tuan))) or (van tuan)) cau*.