Perhaps you should try some spelling variations:
thanh trung » thanh tung
thiet yeu » thiet ke, theo yeu
trung vat » trung va, trung van, trong vat
dung cong » dung trong
yeu tinh » yeu tin, lieu tinh, kieu tinh
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: thiet yeu tinh - thanh trung vat dung cong dan van ban~.
• Adding a wildcard symbol may retrieve word variants: thiet yeu tinh - thanh trung vat dung cong dan van ban*.