Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
hanh tang » hanh trang, hanh mang, hanh tung
cua thong » cua thuong, cua khong, cua tong
anh tang » anh bang, anh dang, anh nang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - ((((hanh tang) OR (anh tang))) or (hanh trinh)) cua thong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((((hanh tang) OR (anh tang))) OR (hanh trinh)) cua thong cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((((hanh tang) OR (anh tang))) or (hanh trinh)) cua thong cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((((hanh tang) OR (anh tang))) or (hanh trinh)) cua thong cong tac toan cau*.