Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu lang » chieu sang, hieu quang, nhieu tang
trung cay » trung cap, trong cay, rung cay
hoc hieu » hoc thieu, hoc hien, doc hieu
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - thanh trung cay trong cong san than cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - thanh trung cay trong cong san than cau*.