Perhaps you should try some spelling variations:
dang cong » dung cong
cha tinh » chau tinh, cham tinh, chai tinh
mang cua » manh cua, ban cua, cong cua
dung cua » dung luan, dung cho
cong tac » cong ty
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
ho cha » ho chua, ho chi, ho ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho cha tinh - hanh ((mang cua) OR (dung cua)) dang cong tac ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho cha tinh - hanh ((mang cua) OR (dung cua)) dang cong tac ((toan cau) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho cha tinh - hanh ((mang cua) OR (dung cua)) dang cong tac ((toan cau) or (toan tap))*".