Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
han tai » hang tai, nhan tai, van tai
truc va » thuc va, thuc vat, trung va
ve chat » va chat, van chat
ve cham » va cham, vu cham, ve chim
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
va han » va phan, van han, va hanh
tai va » thai va, mai va, tri va
thiet » thieu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (lang xa)) hoi. hieu ((ve cham) OR (ve chat)) truc va han tai va thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((nang xa) OR (lang xa)) hoi. hieu ((ve cham) or (ve chat)) truc va han tai va thiet~".
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) OR (lang xa)) hoi. hieu ((ve cham) or (ve chat)) truc va han tai va thiet*.