Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
luan hoan » luan van
hoan cong » hoang cong, hoa cong, toan cong
cong danh » cuong danh, cong dan, cong thanh
danh nhan » doanh nhan, thanh nhan, benh nhan
nhan van » nhan dan, nhan va, phan 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 ((chieu tinh) or (chieu sach)) - hanh trinh luan hoan cong danh nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (chieu sach)) - hanh trinh luan hoan cong danh nhan van*.