Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
trang cua » tranh cua, tang cua, thang cua
trung cua » truong cua, trung tuan, trung cap
tan quang » tang quang, than quang, van quang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh ((trang cua) or (trung cua)) nhung cong ((tan quang) OR (tran quang)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trang cua) OR (trung cua)) nhung cong ((tan quang) OR (tran quang)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((trang cua) or (trung cua)) nhung cong ((tan quang) OR (tran quang)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trang cua) or (trung cua)) nhung cong ((tan quang) OR (tran quang)) cao*.