Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
cua dung » cua dang, cua dong, qua dung
cong anh » cong danh, dong anh, hong anh
tuan tap » toan tap, tuyen tap, toan tai
tuan tai » toan tai, quan tai, tan tai

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 trinh cua dung cong anh ((tuan tap) OR (tuan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - hanh trinh cua dung cong anh ((tuan tap) OR (tuan tai))*".