Perhaps you should try some spelling variations:
trieu dinh » trieu tinh, trieu minh, trien dich
chieu sach » chinh sach, chiet tach, chieu sang
nhanh hanh » nhanh thanh, nhanh thang, thanh thanh
trinh chat » tinh chat, trinh luat, trinh han
dung cong » dung trong
trinh cau » trinh chao, trinh tu, trinh han
cong van » cong vang, cong san, song van
hanh va » hang va, hanh vi
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((trieu dinh) or (chieu sach)) - nhanh hanh va dung cong van ((trinh cau) OR (trinh chat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((trieu dinh) OR (chieu sach)) - nhanh hanh va dung cong van ((trinh cau) OR (trinh chat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((trieu dinh) or (chieu sach)) - nhanh hanh va dung cong van ((trinh cau) OR (trinh chat))".
• Adding a wildcard symbol may retrieve word variants: ho ((trieu dinh) or (chieu sach)) - nhanh hanh va dung cong van ((trinh cau) OR (trinh chat))*.