Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
phuong dan » phuong danh, phuong doan, huong dan
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
ho chieu » theo chieu, doi chieu, mot chieu
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: ((ho chieu) OR (hoc thieu)) xanh - ((hanh tranh) or (hanh trinh)) cua nhung phuong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - ((hanh tranh) OR (hanh trinh)) cua nhung phuong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - ((hanh tranh) or (hanh trinh)) cua nhung phuong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) xanh - ((hanh tranh) or (hanh trinh)) cua nhung phuong dan toan cau*.