Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
hieu van » hieu va, thien van, lieu va
doc sach » hoc sach, nuoc sach, dac sac
danh vai » danh sai, danh va, doanh van
cua tre » cua te, cua triet, dua tren
va danh » va dinh, va dan, va hanh
van cam » van nam, van lam, van cau
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
cuu tre » cau tren, cau treo
xuc va » duc va, tuc va, luc va

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) or (doc sach)) ly nang xa hoi. hieu van cam xuc va danh vai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ly nang xa hoi. hieu van cam xuc va danh vai ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (doc sach)) ly nang xa hoi. hieu van cam xuc va danh vai ((cua tre) OR (cuu tre))*".