Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
duc manh » suc manh, duc anh, duc minh
lang xa » lang ha, dang xay, lang van
qua cam » qua cham, qua cac, qua ca
xuc van » duc van, luc van, vuc van
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach _ lang xa hoi. hieu qua cam ((((xuc van) or (thuc vat))) or (duc manh)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach _ lang xa hoi. hieu qua cam ((((xuc van) OR (thuc vat))) OR (duc manh)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: thu sach _ lang xa hoi. hieu qua cam ((((xuc van) or (thuc vat))) or (duc manh)) hanh vi cuu tre*.