Perhaps you should try some spelling variations:
trinh thanh » tinh thanh, trinh han, trinh toan
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh quan » tinh quang, trinh han
dang cong » dung cong
thanh cac » hanh cac, thanh bac, thanh ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) OR (chieu xanh)) - hanh ((trinh quan) or (trinh luat)) dang cong trinh thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - hanh ((trinh quan) OR (trinh luat)) dang cong trinh thanh cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - hanh ((trinh quan) or (trinh luat)) dang cong trinh thanh cac".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - hanh ((trinh quan) or (trinh luat)) dang cong trinh thanh cac*.