Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
tai so » tai sao, dai so, tai co
tai su » tai tu, lai su, tai du
va han » va phan, van han, va hanh
te sac » te sach, te cac, te san
tuc va » thuc va, truc va, tuc xa
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao

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

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