Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
doi chiet » doi chieu, doi chi, doi viet
trinh tac » trinh tai, trinh tam, trinh cac
tac thong » tac thuong, tac trong, tac chong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiet tach - hanh trinh tac thong cong dan phan cau~.
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - hanh trinh tac thong cong dan phan cau*.