Perhaps you should try some spelling variations:
phuong tuong » phong tuong, phuong duong, phuong luong
chieu sach » chinh sach, chiet tach, chieu sang
hieu quang » thieu quang, hieu quan, hieu qua
trung tuan » trung thanh, trung tam, tran tuan
trung cua » truong cua, trung cap, dung cua
tuong dan » huong dan, tung dan, xuong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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 sach) or (hieu quang)) - thanh ((trung cua) OR (trung tuan)) phuong tuong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hieu quang)) - thanh ((trung cua) OR (trung tuan)) phuong tuong dan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (hieu quang)) - thanh ((trung cua) OR (trung tuan)) phuong tuong dan than cap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hieu quang)) - thanh ((trung cua) OR (trung tuan)) phuong tuong dan than cap*.