Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
truc va » thuc va, thuc vat, trung va
va nang » van nang, da nang, cam nang
nang va » nang van, hang va, nang ma
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang xa hoi. hieu ((va cam) or (ve cham)) truc va nang va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. hieu ((va cam) OR (ve cham)) truc va nang va su triet.
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. hieu ((va cam) or (ve cham)) truc va nang va su triet*.