Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
qua cam » qua cac, qua ca, qua cai
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
va cau » van cau, va dau, va cao
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. hieu ((qua cam) OR (qua cham)) truc va hanh ((va cau) or (va cac)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu ((qua cam) OR (qua cham)) truc va hanh ((va cau) OR (va cac)) treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu ((qua cam) OR (qua cham)) truc va hanh ((va cau) or (va cac)) treo".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ((qua cam) OR (qua cham)) truc va hanh ((va cau) or (va cac)) treo*.