Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
sach ty » sach y, sach tu, sach thu
cua tre » cuu tre, cua triet, dua tren
hanh di » hanh vi, hanh de, hang di
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va hanh » van hanh, va thanh, va danh
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
cua te » cua tu

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 nang xa hoi. hieu va cam xuc va hanh di ((((cua tre) or (cua te))) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu va cam xuc va hanh di ((((cua tre) OR (cua te))) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu va cam xuc va hanh di ((((cua tre) or (cua te))) or (va triet))*.