Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, thong thong
trinh toan » tinh toan, thanh toan, trinh quan
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
trinh han » trinh quan
ho chieu » theo chieu, hoc thieu, doi chieu

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh tranh cua thong cong ((trinh toan) OR (trinh han)) cao~".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh tranh cua thong cong ((trinh toan) OR (trinh han)) cao*.