Perhaps you should try some spelling variations:
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
doi chi » doi khi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (ho chieu)) xanh - thanh ((trung cua) OR (trung cap)) dung cong tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chi) or (ho chieu)) xanh - thanh ((trung cua) OR (trung cap)) dung cong tan toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (ho chieu)) xanh - thanh ((trung cua) OR (trung cap)) dung cong tan toan cao*.