Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
doi chiet » doi chieu, doi chi, doi viet
trinh cua » tinh cua, trinh luat, trinh quan
trong tan » trong quan, trong cac, trong ca
cua dung » cua dang, cua dong, qua dung
tran van » luan van

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 cua dung trong tan tran van~.
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - hanh trinh cua dung trong tan tran van*.