Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
tao thong » giao thong, toan thong, tao khoang
tao trong » cay trong, ro trong
khoan cam » khoa cam, khoan va, phan cam
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac

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 - thanh trung ((tao thong) OR (tao trong)) cong san ((khoan cam) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh trung ((tao thong) OR (tao trong)) cong san ((khoan cam) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh trung ((tao thong) OR (tao trong)) cong san ((khoan cam) or (than cap))*.