Perhaps you should try some spelling variations:
sach tay » xach tay, sach hay, sach nay
van hanh » van thanh, ban hanh, van anh
dang xay » dang van, van xay
cua tuc » cua duc, cua thuoc, luat tuc
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
te sach » toc sach
lang xa » lang ha, lang van
va cam » va cham, va cac, va cao
cua tu » cua su, cua cu, cua te

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

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