Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
tu sac » tu cac, tu san, tu bac
soc va » hoc va, loc va, doc va
dai su » dai sua, dai so, dan su

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) or (tu sach)) ky nang xa hoi. hieu va cham soc va hanh dai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky nang xa hoi. hieu va cham soc va hanh dai su triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu sach)) ky nang xa hoi. hieu va cham soc va hanh dai su triet*.