Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trang » thanh trung, hanh trinh, minh trang
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
ho chiet » ho chieu, ho thiet, hoc thiet
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - ((hanh trang) OR (canh tranh)) cua nhung cong tam toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - ((hanh trang) OR (canh tranh)) cua nhung cong tam toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - ((hanh trang) OR (canh tranh)) cua nhung cong tam toan tap*.