Perhaps you should try some spelling variations:
dang xay » dang van, van xay
su sach » so sach, vu sach
voi cua » hoi cua, doi cua, moi cua
cam tuc » cam xuc, cam tu, nam thuc
sach ty » sach y, sach tu, sach thu
hieu va » hieu qua
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
da voi » dao voi, dua voi, ba voi
va da » va dao, va dau, va dap

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty ((nang xa) or (dang xay)) hoi. ((hieu va) or (lieu va)) cam tuc va da voi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (dang xay)) hoi. ((hieu va) OR (lieu va)) cam tuc va da voi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (dang xay)) hoi. ((hieu va) or (lieu va)) cam tuc va da voi cua tre*.