Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
va phuong » va thuong, cac phuong
hoc hieu » hoc thieu, hoc hien, doc hieu
hanh han » hanh nhan, hanh phan, hanh san
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan tap » han tap, phan tap, chan ta

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - ((hanh han) or (thanh san)) va phuong cong dan chan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((hanh han) OR (thanh san)) va phuong cong dan chan tap.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((hanh han) or (thanh san)) va phuong cong dan chan tap*.