Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh vai » hanh va, hanh tai, hanh van
soc van » hoc van, oc van, sac van
va cham » va chat, va tham
sach ty » sach y, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
sach tu » sach thu, cach tu, sach uu
hieu va » lieu va, hieu qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach tu)) nang xa hoi. hieu va cham soc van ((hanh vai) OR (hanh vi)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) nang xa hoi. hieu va cham soc van ((hanh vai) OR (hanh vi)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach tu)) nang xa hoi. hieu va cham soc van ((hanh vai) OR (hanh vi)) va triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach tu)) nang xa hoi. hieu va cham soc van ((hanh vai) OR (hanh vi)) va triet*.