Perhaps you should try some spelling variations:
su triet » su viet, ve triet
truc va » thuc va, thuc vat, trung va
han tai » hang tai, nhan tai, van tai
su tien » su kien, su hien, tu tieng
van lam » van nam
van cam » van nam, van cau, van dam
nang xa » nang x, lang xa, nang ma
san ky » sang ky, van ky, dan ky
va han » va phan, van han, va hanh
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang xa hoi. hieu ((van cam) or (van lam)) truc va han tai ((su triet) OR (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang xa hoi. hieu ((van cam) OR (van lam)) truc va han tai ((su triet) OR (su tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang xa hoi. hieu ((van cam) or (van lam)) truc va han tai ((su triet) OR (su tien))".
• Adding a wildcard symbol may retrieve word variants: tu san ky nang xa hoi. hieu ((van cam) or (van lam)) truc va han tai ((su triet) OR (su tien))*.