Perhaps you should try some spelling variations:
dang hanh » dang thanh, ban hanh, dang van
thuc dang » thuoc dang, thuc dan, thuc dung
hanh vai » hanh vi, hanh va, hanh tai
su triet » ve triet
bach ky » bac ky
nang xa » nang x, lang xa, nang ma
hieu ca » hieu cac, hieu cua, hieu va
su viet » so viet
su tien » su kien, su hien, tu tieng
ca am » cua am, ca dam, va am

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach ky nang xa hoi. hieu ca am thuc dang hanh vai ((((su triet) OR (su viet))) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ky nang xa hoi. hieu ca am thuc dang hanh vai ((((su triet) OR (su viet))) OR (su tien))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu bach ky nang xa hoi. hieu ca am thuc dang hanh vai ((((su triet) OR (su viet))) or (su tien))*".