Perhaps you should try some spelling variations:
tang lai » trang lai, tang tai, tang loi
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va hanh » va thanh, va danh, ban hanh
hieu va » lieu va, hieu qua
lai hoi » dai hoi, lai hoa, lai roi
hieu ve » hieu van
ky tang » ky nang, ky dang, kho tang
di cua » dai cua, doi cua, de cua
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: te sach ky tang lai hoi. ((hieu ve) or (hieu va)) cam xuc ((va hanh) OR (van hanh)) di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang lai hoi. ((hieu ve) OR (hieu va)) cam xuc ((va hanh) OR (van hanh)) di cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky tang lai hoi. ((hieu ve) or (hieu va)) cam xuc ((va hanh) OR (van hanh)) di cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach ky tang lai hoi. ((hieu ve) or (hieu va)) cam xuc ((va hanh) OR (van hanh)) di cua tu*.