Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
manh trung » manh tung, thanh trung, manh hung
cap thuong » chap thuong, ca thuong, cao thuong
trung cap » truong cao, trung tam
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban
phan tap » phan lap, han tap, pha tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (thien hach)) - manh trung cap thuong cong tan ((toan tap) OR (phan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) OR (thien hach)) - manh trung cap thuong cong tan ((toan tap) or (phan tap))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) OR (thien hach)) - manh trung cap thuong cong tan ((toan tap) or (phan tap))*.