Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
hien nhanh » hien hanh, thien thanh, tien thanh
thanh cung » thanh cuong, thanh cong, thanh tung
phuong dan » phuong danh, huong dan, phuong lan
hien xanh » hien hanh, chieu xanh, hien khanh
ca nhung » cua nhung, cam nhung, va nhung
cung ca » cung cap, cung cua, cung cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (hien nhanh)) - thanh cung ca nhung ((phuong dan) OR (phuong doan)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - thanh cung ca nhung ((phuong dan) OR (phuong doan)) phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien nhanh)) - thanh cung ca nhung ((phuong dan) OR (phuong doan)) phan tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - thanh cung ca nhung ((phuong dan) OR (phuong doan)) phan tu*.