Perhaps you should try some spelling variations:
duong tuong » duong truong, duong trong, duong vuong
chieu sang » chieu sach, chieu xanh, hieu lang
tuong tam » tuong tham, tuong tac, duong tam
ho chieu » theo chieu, hoc thieu, doi chieu
tra tuan » tran tuan, tra quan, ta tuan
tri tuan » tri quan, tran tuan, tri tue
tam toan » tap toan, tam than, pham toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh ((tra tuan) OR (tri tuan)) duong tuong tam toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh ((tra tuan) OR (tri tuan)) duong tuong tam toan ban".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh ((tra tuan) OR (tri tuan)) duong tuong tam toan ban*.