Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien tinh » khien tinh, thien tinh, bien tinh
trung hua » trung ha, trung hoa, trung cua
dung cong » dung trong
hua dung » huu dung, qua dung, thuat dung
cong dan » cong san, cong tan, huong dan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tinh - thanh trung hua dung cong dan ((phan dau) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - thanh trung hua dung cong dan ((phan dau) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - thanh trung hua dung cong dan ((phan dau) or (phan lap))*.