Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
va hanh » van hanh, va danh, ban hanh
cu tren » tu tren, dua tren
y nang » ky nang, ly nang, v nang
vi cu » vi su, vi xu, vi du

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 y nang xa hoi. hieu van cam xuc ((va hanh) or (va thanh)) vi cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang xa hoi. hieu van cam xuc ((va hanh) OR (va thanh)) vi cu tren.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. hieu van cam xuc ((va hanh) or (va thanh)) vi cu tren*.