Perhaps you should try some spelling variations:
cua thuong » cua truong, ca thuong, cua huong
chieu xanh » chieu sach, chieu sang, chieu tinh
cua phuong » cuu phuong, cuc phuong, luan phuong
hieu manh » hieu nganh, dieu hanh, hien hanh
hanh hinh » hanh chinh, hanh tinh, hanh dinh
thong van » trong van, thong va, thong quan
ban cau » bang cau, ban can, van cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (chieu xanh)) - hanh hinh ((cua thuong) OR (cua phuong)) thong van ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - hanh hinh ((cua thuong) OR (cua phuong)) thong van ban cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu xanh)) - hanh hinh ((cua thuong) OR (cua phuong)) thong van ban cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - hanh hinh ((cua thuong) OR (cua phuong)) thong van ban cau*.