Perhaps you should try some spelling variations:
theo dong » theo duong, theo cong, theo don
cang hang » cang thang, hang hang, nang hang
tong cong » trong cong, dung cong, dang cong
cong cong » cong dong, trong cong, dung cong
manh toan » thanh toan, anh tuan, tinh toan
theo doi » theo duoi, theo don, thay doi
hang cua » mang cua, hang ca, huong cua
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo doi) OR (theo dong)) manh - cang hang cua ((tong cong) or (cong cong)) manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo doi) OR (theo dong)) manh - cang hang cua ((tong cong) OR (cong cong)) manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo doi) OR (theo dong)) manh - cang hang cua ((tong cong) or (cong cong)) manh toan tap".
• Adding a wildcard symbol may retrieve word variants: ((theo doi) OR (theo dong)) manh - cang hang cua ((tong cong) or (cong cong)) manh toan tap*.