Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thanh trung » thanh tung
hanh trinh » canh tranh, hanh chinh
cap thuong » chap thuong, ca thuong, cao thuong
tieu sach » chieu sach, dien sach, te sach
cong tac » cong ty
than tap » han tap, phan tap, than cap
toan tap » toan ban

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

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