Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
thong cong » trong cong, tong cong, thong thong
thien anh » thien danh, tien anh, thien thanh
tranh cua » doanh cua, manh cua
cong tinh » cong trinh, cong vinh, long tinh
van quan » van ban
toan tap » toan ban

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)) - canh ((tranh cua) or (van quan)) thong cong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - canh ((tranh cua) OR (van quan)) thong cong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - canh ((tranh cua) or (van quan)) thong cong tinh toan tap*.