Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
hanh trinh » canh tranh, hanh chinh
thieu xanh » chieu xanh, thien anh, thien danh
phuong dan » phuong danh, huong dan, phuong lan
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
toan cau » toan cao, toan ban, toan tap

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

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