Perhaps you should try some spelling variations:
chieu lang » chieu sang, chi lang, chieu xanh
nhung cong » dung cong, thong cong, hang cong
trinh xuan » trinh quan, trinh luan, trinh luat
hieu lang » chieu sang, hieu quang, nhieu tang
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
xuan cau » quan cau, xuan can, xuan cang

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 lang) or (hieu lang)) - thanh ((trung va) OR (trung ha)) nhung cong trinh xuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu lang) OR (hieu lang)) - thanh ((trung va) OR (trung ha)) nhung cong trinh xuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu lang) or (hieu lang)) - thanh ((trung va) OR (trung ha)) nhung cong trinh xuan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu lang) or (hieu lang)) - thanh ((trung va) OR (trung ha)) nhung cong trinh xuan cau*.