Perhaps you should try some spelling variations:
thanh trung » thanh tung
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu
dung cong » dung trong
thuat ban » thuat bai, thuat bao, thuat san
tam dung » tam duong, tac dung, tan dung
xuat ban » luat ban, xuat san, xuat hoan

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 hien) OR (hoc thieu)) tinh - thanh trung tam dung cong thanh ((xuat ban) OR (thuat ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hien) or (hoc thieu)) tinh - thanh trung tam dung cong thanh ((xuat ban) OR (thuat ban))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (hoc thieu)) tinh - thanh trung tam dung cong thanh ((xuat ban) OR (thuat ban))*.