Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
dang xay » dang van, van xay
dung sai » dung tai, dung va, dung dat
qua cham » qua hai, qua cac, va cham
sach ky » sac ky, sach y, sach ty
va dung » van dung, va duong, vat dung
lang xa » lang ha, lang van
soc va » hoc va, loc va, doc va
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: toc sach ky ((lang xa) or (dang xay)) hoi. hieu qua cham soc va dung sai ((cua triet) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky ((lang xa) OR (dang xay)) hoi. hieu qua cham soc va dung sai ((cua triet) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: toc sach ky ((lang xa) or (dang xay)) hoi. hieu qua cham soc va dung sai ((cua triet) or (cua tu))*.