Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
danh vai » danh sai, danh va, doanh van
nang xa » nang x, lang xa, mang xa
vai cua » dai cua, hai cua, lai cua
nang ma » tang ma, sang ma, nang cao
va danh » va dinh, va dan, va hanh
hieu ve » hieu va
cao duc » dao duc, cao suc, giao duc
tu sac » tu sach, tu cac, tu san
cua te » cua tu
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky ((nang xa) OR (nang ma)) hoi. ((hieu ve) or (hieu van)) cao duc va danh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang xa) OR (nang ma)) hoi. ((hieu ve) OR (hieu van)) cao duc va danh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang xa) OR (nang ma)) hoi. ((hieu ve) or (hieu van)) cao duc va danh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) OR (nang ma)) hoi. ((hieu ve) or (hieu van)) cao duc va danh vai cua te*.