Perhaps you should try some spelling variations:
cua triet » su triet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
cua viet » ca viet, hoa viet, cua vat
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa

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 (ve cham)) tuc va hanh dai ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang xa hoi. hieu ((va cam) OR (ve cham)) tuc va hanh dai ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang xa hoi. hieu ((va cam) or (ve cham)) tuc va hanh dai ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang xa hoi. hieu ((va cam) or (ve cham)) tuc va hanh dai ((cua triet) OR (cua viet))*.