Perhaps you should try some spelling variations:
lam chat » luan chat, cao chat, ly chat
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
lam cua » nam cua
va cam » va cham, va cac, va cao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang x) OR (lang xa)) hoi. hieu va cam duc va hanh ((lam cua) OR (lam chat)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang x) or (lang xa)) hoi. hieu va cam duc va hanh ((lam cua) OR (lam chat)) tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang x) or (lang xa)) hoi. hieu va cam duc va hanh ((lam cua) OR (lam chat)) tre*.