Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang xa hoi. hieu va cac ((xuc va) or (thuc va)) thanh san ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu va cac ((xuc va) OR (thuc va)) thanh san ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu va cac ((xuc va) or (thuc va)) thanh san ((cua triet) or (va triet))*.