Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
truong cua » truong ca, truong quan, truong cao
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
toan cau » toan cao, toan ban, toan tap

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: ((hoc thieu) OR (hoc hien)) manh - manh ((trung tuan) OR (truong cua)) nhung cong hach toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (hoc hien)) manh - manh ((trung tuan) or (truong cua)) nhung cong hach toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (hoc hien)) manh - manh ((trung tuan) or (truong cua)) nhung cong hach toan cau*.