Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
ncanh tinh » nhanh tinh, thanh tinh, hanh tinh
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
canh tinh » hanh tinh, manh tinh, canh tranh
cua nhung » va nhung
cong tinh » cong trinh, cong vinh, long tinh
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 (hieu manh)) - ((canh tinh) or (ncanh tinh)) cua nhung cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - ((canh tinh) OR (ncanh tinh)) cua nhung cong tinh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - ((canh tinh) or (ncanh tinh)) cua nhung cong tinh toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - ((canh tinh) or (ncanh tinh)) cua nhung cong tinh toan cao*.