Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
tung cua » trung cua, tuong cua, dung cua
van tan » van tuan, van ban, van tai

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 (hieu manh)) - thanh tung cua nhung cong ((manh toan) or (van tan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh tung cua nhung cong ((manh toan) OR (van tan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - thanh tung cua nhung cong ((manh toan) or (van tan)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - thanh tung cua nhung cong ((manh toan) or (van tan)) cao*.