Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
ca cau » cua cau, cac cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang mai hoi. hieu va cac xuc ((va danh) OR (va hanh)) ca cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang mai hoi. hieu va cac xuc ((va danh) OR (va hanh)) ca cau tren".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang mai hoi. hieu va cac xuc ((va danh) OR (va hanh)) ca cau tren*.