Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
cau thuc » cau truc, cuu thuc, can thuc
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
tu sach » su sach, tu cach, vu sach
nang xa » nang x, lang xa, nang ma
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
va cau » van cau, va cac, va dau
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((tu sach) OR (thu sach))) or (te sach)) ky nang xa hoi. hieu va cau thuc va hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (thu sach))) OR (te sach)) ky nang xa hoi. hieu va cau thuc va hanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sach) OR (thu sach))) or (te sach)) ky nang xa hoi. hieu va cau thuc va hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) OR (thu sach))) or (te sach)) ky nang xa hoi. hieu va cau thuc va hanh di cua tre*.