Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
va triet » va thiet, va trien, ve triet
hanh vai » hanh vi, hanh va, hanh tai
ton hanh » toan hanh, hon hanh, lon hanh
duc ton » duc tan
sach ty » sach y, sach tu, sach thu
te sach » toc sach
dung ha » dung va, dung he, dung khoa
dang ha » dong ha, lang ha, tang ha
hieu vi » hieu voi, hieu va, hieu ve
pham » phan

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 ty ((dang ha) or (dung ha)) hoi. hieu vi pham duc ton hanh vai ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((dang ha) OR (dung ha)) hoi. hieu vi pham duc ton hanh vai ((va triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ty ((dang ha) or (dung ha)) hoi. hieu vi pham duc ton hanh vai ((va triet) or (su triet))*.