Perhaps you should try some spelling variations:
dong thuong » cong thuong, dong thong, dung thuong
thuong dan » huong dan, thuong han, thuong dam
canh manh » lanh manh, canh tranh, cach mang
thanh cac » hanh cac, thanh bac, thanh ca
thanh lap » thanh san, phan lap, thanh hai
theo chu » theo chieu, cho chu, chao chu
manh cua » doanh cua, ban cua
cua dong » chua dong, cua cong, cua dang

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) or (theo chu)) xanh - canh manh cua dong thuong dan ((thanh cac) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (theo chu)) xanh - canh manh cua dong thuong dan ((thanh cac) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (theo chu)) xanh - canh manh cua dong thuong dan ((thanh cac) or (thanh lap))*.