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

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