Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
toan cao » toan ban, toan tap
hoa cua » hoa chat, hoa xuat
ha cua » hai cua, nha cua, ham cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ha cua) OR (hoa cua)) tinh - hanh tranh cua nhung ((cong dan) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ha cua) OR (hoa cua)) tinh - hanh tranh cua nhung ((cong dan) OR (cong tac)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ha cua) OR (hoa cua)) tinh - hanh tranh cua nhung ((cong dan) or (cong tac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ha cua) OR (hoa cua)) tinh - hanh tranh cua nhung ((cong dan) or (cong tac)) toan cao*.