Perhaps you should try some spelling variations:
sach van » sach han, bach van, cach van
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
sach va » sach xa, sach ha, sach dao
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
ve cai » va cai, ve cac, ve tai
va cam » va cham, va cac, va cao
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: tu ((sach van) or (sach va)) nang xa hoi. hieu ((ve cai) or (va cam)) thuc dan hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach van) OR (sach va)) nang xa hoi. hieu ((ve cai) OR (va cam)) thuc dan hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu ((sach van) or (sach va)) nang xa hoi. hieu ((ve cai) or (va cam)) thuc dan hanh vi cua te*.