Perhaps you should try some spelling variations:
thuong dong » phuong dong, tuong dong, chuong dong
theo chieu » theo tieu, ho chieu, theo chu
cua thuong » cua truong, cua phuong, ca thuong
hoc thieu » toc thieu, hoc hien
canh manh » canh tranh, cach mang, van manh
lanh manh » lanh tranh, lan anh, van manh
dong tac » cong tac, dong tai, dong bac
tac van » tac vang, cac van, tac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (theo chieu)) xanh - ((canh manh) OR (lanh manh)) cua thuong dong tac van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chieu)) xanh - ((canh manh) OR (lanh manh)) cua thuong dong tac van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (theo chieu)) xanh - ((canh manh) OR (lanh manh)) cua thuong dong tac van ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo chieu)) xanh - ((canh manh) OR (lanh manh)) cua thuong dong tac van ban*.