Perhaps you should try some spelling variations:
sach van » sach han, sach va, bach van
van nang » van quang, van ban, van dong
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
vu sach » vu bach, su sach, vu khach
ve chat » va chat, van chat
ve cham » va cham, vu cham, ve chim
nang xa » nang x, lang xa, nang ma
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach van nang xa hoi. hieu ((ve cham) OR (ve chat)) thuc van hanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach van nang xa hoi. hieu ((ve cham) OR (ve chat)) thuc van hanh ((vi cua) OR (di cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach van nang xa hoi. hieu ((ve cham) OR (ve chat)) thuc van hanh ((vi cua) or (di cua)) tre".
• Adding a wildcard symbol may retrieve word variants: vu sach van nang xa hoi. hieu ((ve cham) OR (ve chat)) thuc van hanh ((vi cua) or (di cua)) tre*.