Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
van hanh » ban hanh, van anh, van ban
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang xa hoi. hieu va tham nuoc ((van hanh) OR (van thanh)) lai su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang xa hoi. hieu va tham nuoc ((van hanh) OR (van thanh)) lai su triet".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang xa hoi. hieu va tham nuoc ((van hanh) OR (van thanh)) lai su triet*.