Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va dinh » van dinh, va kinh, vu dinh
va tinh » may tinh
duy cua » day cua, dung cua
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
du cua » dau cua, dum cua, hu cua

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 y nang xa hoi. hieu va cam duc ((va dinh) or (va tinh)) ((du cua) OR (duy cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu va cam duc ((va dinh) OR (va tinh)) ((du cua) OR (duy cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu va cam duc ((va dinh) or (va tinh)) ((du cua) OR (duy cua)) triet*".