Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh hang » thanh hang, hang hang, hanh han
cua nhung » va nhung
chu tinh » chau tinh, chua tinh, cuu tinh
hang cua » mang cua, hang ca, huong cua
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap
hoi chu » hoi chuc
tuan cu » tuan tu, quan cua, tuan thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi chu tinh - hanh hang cua nhung cong tac ((toan cau) or (tuan cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi chu tinh - hanh hang cua nhung cong tac ((toan cau) OR (tuan cu)).
• Adding a wildcard symbol may retrieve word variants: hoi chu tinh - hanh hang cua nhung cong tac ((toan cau) or (tuan cu))*.