Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
chieu tinh » trieu tinh, lieu tinh, chau tinh
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, hang cong
trinh toan » tinh toan, thanh toan, trinh han
hieu lang » chieu sang, hieu quang, hieu van
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
toan tap » toan ban

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: hoc ((((chieu tinh) OR (hieu lang))) OR (nhieu tang)) - manh trung cua nhung cong trinh toan tap~.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu tinh) or (hieu lang))) or (nhieu tang)) - manh trung cua nhung cong trinh toan tap*.