Perhaps you should try some spelling variations:
te sach » toc sach
ky dung » ly dung, ky dang, y dung
ky vung » tay vung, ky nhung, my vuong
mat hoi » mai hoi, sat hoi, mat troi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
soc va » hoc va, loc va, doc va

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 dung) OR (ky vung)) mat hoi. hieu ve cham soc va hanh ((ly cua) or (le cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky dung) OR (ky vung)) mat hoi. hieu ve cham soc va hanh ((ly cua) OR (le cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky dung) OR (ky vung)) mat hoi. hieu ve cham soc va hanh ((ly cua) or (le cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky dung) OR (ky vung)) mat hoi. hieu ve cham soc va hanh ((ly cua) or (le cua)) tre*.