Perhaps you should try some spelling variations:
danh dau » lanh dao, hang dau, danh tu
te sach » toc sach
ky sang » ky nang, ky tang, duy sang
dau cua » dai cua, day cua, cau cua
ky dang » ky nang, ky danh
lap hai » lap tai, lap lai, lap hoat
hieu va » lieu va, hieu qua
luc va » duc va, tuc va, loc va
va cao » va cac, va co, va dao
xuc va » duc va, tuc va, xac va
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: te sach ((ky sang) or (ky dang)) lap hai. hieu va cao ((xuc va) OR (luc va)) danh dau cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky sang) OR (ky dang)) lap hai. hieu va cao ((xuc va) OR (luc va)) danh dau cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky sang) or (ky dang)) lap hai. hieu va cao ((xuc va) OR (luc va)) danh dau cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky sang) or (ky dang)) lap hai. hieu va cao ((xuc va) OR (luc va)) danh dau cua te*.