Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hanh » van thanh, ban hanh, van anh
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cau xuc » cam xuc, cau luc, cau truc
xuc van » duc van, luc van, vuc van
y lang » o lang, _ lang, tay lang
va cau » van cau, va cac, va cao
vi dau » vi dai, bi dau, ve dau
va dau » va dao

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y lang xa hoi. hieu va cau xuc van hanh ((vi dau) OR (va dau)) tren~".
• Adding a wildcard symbol may retrieve word variants: thuat sach y lang xa hoi. hieu va cau xuc van hanh ((vi dau) OR (va dau)) tren*.