Perhaps you should try some spelling variations:
thong quang » thong quan, thong qua, luong quang
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
cong quang » luong quang, duong quang, dang quang
trung cua » truong cua, trung cap, dung cua
ho chieu » theo chieu, hoc thieu, doi chieu

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