Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
hach toan » thanh toan, manh toan
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung ha
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: ho chieu xanh - thanh trung va nhung cong ((tac toan) OR (hach toan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh trung va nhung cong ((tac toan) OR (hach toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh trung va nhung cong ((tac toan) OR (hach toan)) cao*.