Perhaps you should try some spelling variations:
tang lai » trang lai, tang tai, tang loi
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
hieu ve » hieu van
lai hoi » dai hoi, lai hoa, lai roi
ky tang » ky nang, ky dang, kho tang
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 tang lai hoi. ((hieu ve) or (hieu va)) cam tuc va hanh ((vi cua) OR (di cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang lai hoi. ((hieu ve) OR (hieu va)) cam tuc va hanh ((vi cua) OR (di cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky tang lai hoi. ((hieu ve) or (hieu va)) cam tuc va hanh ((vi cua) OR (di cua)) tu".
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang lai hoi. ((hieu ve) or (hieu va)) cam tuc va hanh ((vi cua) OR (di cua)) tu*.