Perhaps you should try some spelling variations:
sach van » sach han, sach va, bach van
day hanh » day nhanh, day thanh, dao hanh
thuc day » thuc dan, thuc vat
tu sach » thu sach, su sach, te sach
nang xa » nang x, nang ma, mang xa
hanh di » hanh vi, hanh de, hang di
lang xa » lang ha, dang xay, lang van
di cua » dai cua, doi cua, de 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 ((nang xa) or (lang xa)) hoi. hieu ((ve cai) or (va cam)) thuc day hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach van ((nang xa) OR (lang xa)) hoi. hieu ((ve cai) OR (va cam)) thuc day hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach van ((nang xa) or (lang xa)) hoi. hieu ((ve cai) or (va cam)) thuc day hanh di cua te*.