Perhaps you should try some spelling variations:
thanh trung » thanh tung
dieu danh » tieu danh, dia danh, dien anh
trung vat » trung va, trung van, trong vat
dung cong » dung trong
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((dieu danh) OR (dieu hanh)) - thanh trung vat dung cong dan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((dieu danh) OR (dieu hanh)) - thanh trung vat dung cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((dieu danh) OR (dieu hanh)) - thanh trung vat dung cong dan toan ban*.