Perhaps you should try some spelling variations:
trien quang » tran quang, tuyen quang, dien quang
nhung tuong » nhung huong, nhung phuong, hung vuong
manh trung » manh tung, thanh trung, manh hung
hieu quan » hieu qua, lieu quan, thien quan
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
tuong dan » huong dan, tung dan, xuong dan
dan than » dan chan, ban than, van 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 quan) or (trien quang)) - manh trung cua nhung tuong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu quan) OR (trien quang)) - manh trung cua nhung tuong dan than cau*.