Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
nhanh mang » nhanh lang, hanh mang, nhanh quang
thien anh » thien danh, tien anh, thien thanh
trinh van » trinh han, trinh quan, trinh toan
anh dang » anh dong, anh dung, anh bang
ban cong » bang cong, van cong, phan cong
van cau » van dau, van hau, van chat

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 (thien anh)) - ((anh dang) or (nhanh mang)) cua ban cong trinh van cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - ((anh dang) OR (nhanh mang)) cua ban cong trinh van cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (thien anh)) - ((anh dang) or (nhanh mang)) cua ban cong trinh van cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (thien anh)) - ((anh dang) or (nhanh mang)) cua ban cong trinh van cau*.