Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
qua cam » qua cham, qua cai, qua cay
qua cac » cua cac
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
qua ca » qua cua, qua cai, quan cau
va cau » van cau, va cac, va dau
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 cac))) or (qua ca)) thuc va hanh va cau 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 cac))) OR (qua ca)) thuc va hanh va cau 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 cac))) or (qua ca)) thuc va hanh va cau treo".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ((((qua cam) OR (qua cac))) or (qua ca)) thuc va hanh va cau treo*.