Perhaps you should try some spelling variations:
thieu lang » thieu khang, thieu quang, chieu sang
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
cong cau » cong cu, cong chuc, thong cau
cau phan » chau phan, cuu phan, cac phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu lang) OR (hieu lang)) - thanh ((trung va) or (trung ha)) dung cong cau phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu lang) OR (hieu lang)) - thanh ((trung va) OR (trung ha)) dung cong cau phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu lang) OR (hieu lang)) - thanh ((trung va) or (trung ha)) dung cong cau phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu lang) OR (hieu lang)) - thanh ((trung va) or (trung ha)) dung cong cau phan cau*.