Perhaps you should try some spelling variations:
chau tinh » cuu tinh, cua tinh, cac tinh
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
cong cap » cung cap, cong cau, cong lap
cong cac » cuong cac, cong tac, cong cau
toan tap » toan ban
ha tinh » va tinh, may tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chau tinh) or (ha tinh)) - thanh ((cong cap) or (cong cac)) dung cong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chau tinh) OR (ha tinh)) - thanh ((cong cap) OR (cong cac)) dung cong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: ho ((chau tinh) or (ha tinh)) - thanh ((cong cap) or (cong cac)) dung cong tinh toan tap*.