Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
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
can cau » van cau, ban cau, ca cau
ma hoi » mai hoi, xa hoi, ma hoa

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