Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
cong cong » cong dong, dung cong, dang cong
anh hung » anh huong, manh hung, anh dung
hung cua » huong cua, chung cua, khung cua
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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 hung cua ((cong cong) or (trong cong)) tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - anh hung cua ((cong cong) OR (trong cong)) tan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - anh hung cua ((cong cong) or (trong cong)) tan toan cau*.