Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
chieu sach » chinh sach, chiet tach, chieu sang
hang cong » dang cong, bang cong, thanh cong
hang nong » thang long, han tong
tac nhanh » tac nhan, tac thanh, tai nhanh
nhanh cau » nhanh cay, thanh chau, nhanh ha
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tinh chat

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 - hanh ((tinh cua) or (trinh quan)) ((hang cong) or (hang nong)) tac nhanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((tinh cua) OR (trinh quan)) ((hang cong) OR (hang nong)) tac nhanh cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((tinh cua) or (trinh quan)) ((hang cong) or (hang nong)) tac nhanh cau*.