Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung cap, dung cua
thanh lap » phan lap, thanh hai, thanh van
cua tinh » cua sinh, va tinh, ha tinh
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cua tinh - thanh ((trung cua) OR (trung tuan)) nhung cong dan ((thanh lap) or (thanh san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cua tinh - thanh ((trung cua) OR (trung tuan)) nhung cong dan ((thanh lap) OR (thanh san)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc cua tinh - thanh ((trung cua) OR (trung tuan)) nhung cong dan ((thanh lap) or (thanh san))".
• Adding a wildcard symbol may retrieve word variants: hoc cua tinh - thanh ((trung cua) OR (trung tuan)) nhung cong dan ((thanh lap) or (thanh san))*.