Perhaps you should try some spelling variations:
cam truc » cau truc, nam truc, lam truoc
truc van » truc va, thuc van, truc ban
hanh vai » hanh va, hanh tai, hanh van
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
y lang » o lang, _ lang, tay lang
va cam » va cham, va cac, va cao

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: "te sach y lang xa hoi. hieu va cam truc van ((hanh vai) OR (hanh vi)) qua su~".
• Adding a wildcard symbol may retrieve word variants: te sach y lang xa hoi. hieu va cam truc van ((hanh vai) OR (hanh vi)) qua su*.