Perhaps you should try some spelling variations:
te sach » toc sach
hoi cua » hoi chuc
doi cua » dai cua
va dung » van dung, va duong, vat dung
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
sach 2 » sach y
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 2 ((nang xa) or (lang xa)) hoi. hieu ve cham soc va dung ((doi cua) OR (hoi cua)) chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach 2 ((nang xa) OR (lang xa)) hoi. hieu ve cham soc va dung ((doi cua) OR (hoi cua)) chu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach 2 ((nang xa) or (lang xa)) hoi. hieu ve cham soc va dung ((doi cua) OR (hoi cua)) chu".
• Adding a wildcard symbol may retrieve word variants: te sach 2 ((nang xa) or (lang xa)) hoi. hieu ve cham soc va dung ((doi cua) OR (hoi cua)) chu*.