Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh tranh » canh tranh, hanh trinh, hanh trang
lieu tinh » trieu tinh, diep tinh, bien tinh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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 ((lieu tinh) OR (chiet tach)) - hanh tranh cua thong thong dan toan tap~.
• Adding a wildcard symbol may retrieve word variants: doi ((lieu tinh) or (chiet tach)) - hanh tranh cua thong thong dan toan tap*.