Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong dan » phuong danh, phuong doan, huong dan
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
hanh nang » ganh nang, hanh mang, hanh trang
anh nang » ganh nang, anh bang, anh dang
dan toan » van toan, dan than, manh toan
toan cau » 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 ((hien xanh) OR (hien hanh)) - ((hanh nang) or (anh nang)) va nhung phuong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - ((hanh nang) OR (anh nang)) va nhung phuong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien hanh)) - ((hanh nang) or (anh nang)) va nhung phuong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien hanh)) - ((hanh nang) or (anh nang)) va nhung phuong dan toan cau*.