Perhaps you should try some spelling variations:
quang tuan » quang thanh, quan luan, quang cua
tieu xanh » tieu danh, chieu xanh, dieu hanh
tung tuan » trung tuan, hung tuan, trang tuan
hung cong » nhung cong, hung cuong, phung cong
tac thanh » bac thanh, cac thanh, tcc thanh
tac than » tam than, tac nhan, bac thanh

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - thanh ((tung tuan) OR (quang tuan)) hung cong ((tac than) OR (tac thanh)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - thanh ((tung tuan) or (quang tuan)) hung cong ((tac than) OR (tac thanh)) cau~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - thanh ((tung tuan) or (quang tuan)) hung cong ((tac than) OR (tac thanh)) cau*.