Perhaps you should try some spelling variations:
phuong dan » phuong danh, phuong doan, phuong lan
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
hanh manh » hanh mang, lanh manh, hoang manh
cua nhung » va nhung
manh cua » doanh cua, ban cua
toan ban » van ban

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 hanh)) - hanh manh cua nhung ((phuong dan) OR (huong dan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - hanh manh cua nhung ((phuong dan) OR (huong dan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien hanh)) - hanh manh cua nhung ((phuong dan) OR (huong dan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - hanh manh cua nhung ((phuong dan) OR (huong dan)) toan ban*.