Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hieu nganh » vien nganh, hiem ngan, hieu manh
luong quan » thong quan, duong qua
tong quan » thong quan, tong luan, cuong quan
dung cong » dung trong
cong van » cong vang, cong san, song van
van tai » von tai, van tuan
tai cao » thai cao, tao cao, tai sao

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 xanh) or (hieu nganh)) - thanh ((tong quan) or (luong quan)) dung cong van tai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu nganh)) - thanh ((tong quan) OR (luong quan)) dung cong van tai cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu nganh)) - thanh ((tong quan) or (luong quan)) dung cong van tai cao*.