Perhaps you should try some spelling variations:
sach tien » sach tren, sach thieu
tien nang » thien nang, trien nang, tin nang
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, lang xa, nang ma
va lam » van lam
luc va » duc va, tuc va, loc va
cua te » cua tu
va lap » va dap

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 tien nang xa hoi. hieu ((va lam) OR (va lap)) luc va thanh vi ((cua te) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tien nang xa hoi. hieu ((va lam) OR (va lap)) luc va thanh vi ((cua te) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tien nang xa hoi. hieu ((va lam) OR (va lap)) luc va thanh vi ((cua te) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sach tien nang xa hoi. hieu ((va lam) OR (va lap)) luc va thanh vi ((cua te) or (cuu tre))*.