Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
ho nhieu » hop nhieu, he nhieu, hoc thieu
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

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