Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
dang xay » dang van, van xay
so sach » so sanh, bo sach, co sach
xuc van » duc van, luc van, vuc van
va cham » va chat, va tham
ve cham » ve chat, vu cham, ve chim
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty ((nang xa) or (dang xay)) hoi. hieu ((ve cham) or (va cham)) xuc van hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty ((nang xa) OR (dang xay)) hoi. hieu ((ve cham) OR (va cham)) xuc van hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: so sach ty ((nang xa) or (dang xay)) hoi. hieu ((ve cham) or (va cham)) xuc van hanh vi cua tu*.