Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trung hoc » trung quoc
hoc nhung » hoa nhung, hon nhung, nuoc nhung
cong tinh » cong trinh, cong vinh, long tinh
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (hieu lang)) - thanh trung hoc nhung cong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (hieu lang)) - thanh trung hoc nhung cong tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (hieu lang)) - thanh trung hoc nhung cong tinh toan cau*.