Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
tu sach » thu sach, su sach, tu cach
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
lap hoi » lap doi, lai hoi, lap hai
ky sang » ky nang, ky dang, ky tang
te sach » toc sach
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
cua te » cua tu

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