Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va triet » va thiet, cua triet, va viet
ve triet » su triet
va trien » va truyen, va thiet, va tuyen
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, x ho
dich » dinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y nang x hoi. hieu va cam xuc van dich vu ((((va triet) or (ve triet))) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang x hoi. hieu va cam xuc van dich vu ((((va triet) OR (ve triet))) OR (va trien)).
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang x hoi. hieu va cam xuc van dich vu ((((va triet) or (ve triet))) or (va trien))*.