Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
theo chieu » theo tieu, ho chieu, theo chu
phuong cua » huong cua, chuong chua, thong cua
hang cong » dang cong, hang nong, bang cong
chao chu » cho chu, cua chu, cao cho
cong dan » cong san, cong tan, huong dan
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: ((chao chu) or (theo chieu)) xanh - hoang ((phuong cua) OR (phuong cham)) hang cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((chao chu) OR (theo chieu)) xanh - hoang ((phuong cua) OR (phuong cham)) hang cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((chao chu) or (theo chieu)) xanh - hoang ((phuong cua) OR (phuong cham)) hang cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: ((chao chu) or (theo chieu)) xanh - hoang ((phuong cua) OR (phuong cham)) hang cong dan toan cau*.