Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
cua nhung » va nhung
hach toan » thanh toan, manh toan
tac toan » tap toan, tam toan, tich toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu tinh - ((canh tranh) or (thanh trung)) cua nhung cong ((tac toan) OR (hach toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - ((canh tranh) OR (thanh trung)) cua nhung cong ((tac toan) OR (hach toan)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - ((canh tranh) or (thanh trung)) cua nhung cong ((tac toan) OR (hach toan)) cao*".