Perhaps you should try some spelling variations:
tieng manh » tieng anh, tien manh, tieng han
trung tran » trung thanh, trung tam, hung tran
trung tuan » trung thanh, trung tam, tran tuan
hoc tieng » hoc hien
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tieng manh - thanh ((trung tran) OR (trung tuan)) dung cong dan than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc tieng manh - thanh ((trung tran) OR (trung tuan)) dung cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: hoc tieng manh - thanh ((trung tran) OR (trung tuan)) dung cong dan than cao*.