Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
dang mau » dong mau, dang van, dang su
thanh va » thanh van, hanh va, thanh ha
dang nam » dong nam, dan nam, dung nam
te sach » toc sach
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu van
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
tuc ban » thuc ban, truc ban, tu ban
va cua » va chua, via cua, ca 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: te sach ky ((dang mau) or (dang nam)) hoi. ((hieu ve) OR (hieu va)) cam tuc ban thanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((dang mau) OR (dang nam)) hoi. ((hieu ve) OR (hieu va)) cam tuc ban thanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((dang mau) or (dang nam)) hoi. ((hieu ve) OR (hieu va)) cam tuc ban thanh va cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((dang mau) or (dang nam)) hoi. ((hieu ve) OR (hieu va)) cam tuc ban thanh va cua te*.