Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
xa thanh » va thanh, ha thanh, ta thanh
cam tuc » cam xuc, cam tu, nam thuc
vai cua » dai cua, hai cua, lai cua
xa hanh » xa khanh, va hanh, da hanh
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang ma hoi. hieu va cam tuc ((xa hanh) OR (xa thanh)) ((vi cua) or (vai cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoi. hieu va cam tuc ((xa hanh) OR (xa thanh)) ((vi cua) OR (vai cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ma hoi. hieu va cam tuc ((xa hanh) OR (xa thanh)) ((vi cua) or (vai cua)) tu".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoi. hieu va cam tuc ((xa hanh) OR (xa thanh)) ((vi cua) or (vai cua)) tu*.