Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chiet tach » chieu sach
chong cong » cong cong, thong cong, cuong cong
hieu lang » chieu sang, hieu quang, nhieu tang
trang cua » tranh cua, tang cua, trung cua
cua chong » cua cong, cua chung, cua khong
cong tac » cong ty
nhan tai » hang tai, van tai, toan tai
han tap » han tai, toan tap, nhan tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) or (chiet tach)) - hanh trang cua chong cong tac ((han tap) OR (nhan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chiet tach)) - hanh trang cua chong cong tac ((han tap) OR (nhan tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) or (chiet tach)) - hanh trang cua chong cong tac ((han tap) OR (nhan tai))".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (chiet tach)) - hanh trang cua chong cong tac ((han tap) OR (nhan tai))*.