Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien tach » thien hach, chiet tach, vien bach
cap phan » cac phan, cao phan, cap han
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac
cap hay » cap xay, cap han, cap giay

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 tach - thanh trung ((cap hay) or (cap phan)) cong dan ((than cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tach - thanh trung ((cap hay) OR (cap phan)) cong dan ((than cau) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: hoc hien tach - thanh trung ((cap hay) or (cap phan)) cong dan ((than cau) or (than cap))*.