Perhaps you should try some spelling variations:
thieu sang » thieu khang, thieu quang, hieu lang
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tran » thanh trang, thanh toan, thanh tra
trung dung » ung dung, trung uong, trinh dung
thong dung » thong cong, thong thuong
tran tuan » tran xuan, tran quang, tran thanh
tuan tu » tuan thu, tran tu, toan tu

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 sang) OR (chieu sang)) - thanh tran tuan ((trung dung) or (thong dung)) anh tuan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (chieu sang)) - thanh tran tuan ((trung dung) OR (thong dung)) anh tuan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) OR (chieu sang)) - thanh tran tuan ((trung dung) or (thong dung)) anh tuan tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) OR (chieu sang)) - thanh tran tuan ((trung dung) or (thong dung)) anh tuan tu*.