Perhaps you should try some spelling variations:
trinh thanh » tinh thanh, trinh han, trinh toan
trinh quan » tinh quang, trinh luat, trinh han
hieu xanh » chieu xanh, hieu nganh, dieu hanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh cua » tinh cua, trinh luat, trinh luan
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: doc ((hieu xanh) or (hieu manh)) - hanh ((trinh cua) OR (trinh quan)) dang cong trinh thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (hieu manh)) - hanh ((trinh cua) OR (trinh quan)) dang cong trinh thanh cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (hieu manh)) - hanh ((trinh cua) OR (trinh quan)) dang cong trinh thanh cac".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (hieu manh)) - hanh ((trinh cua) OR (trinh quan)) dang cong trinh thanh cac*.