Perhaps you should try some spelling variations:
sach chuc » cach thuc, sach che, sach thu
chuc lang » chuc nang, chuc cong, chi lang
toc sach » hoc sach, doc sach, thuoc sach
hanh lam » thanh lap, hanh kem, hanh va
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
duc van » duc va, duc manh, duc phan
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach chuc lang xa hoi. hieu va cac ((duc van) or (duc tan)) hanh lam ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach chuc lang xa hoi. hieu va cac ((duc van) OR (duc tan)) hanh lam ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: toc sach chuc lang xa hoi. hieu va cac ((duc van) or (duc tan)) hanh lam ((cua tre) or (cuu tre))*.