Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
dao xuc » dao duc, dao tuc, dao xuan
tang ma » mang may, tang van
cuu tre » cua tre, cau tren, cau treo
dao xu » dai xu, dao du, dao vu
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach y) or (sai ky)) tang ma hoa. hieu va ((dao xuc) OR (dao xu)) va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sai ky)) tang ma hoa. hieu va ((dao xuc) OR (dao xu)) va hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach y) or (sai ky)) tang ma hoa. hieu va ((dao xuc) OR (dao xu)) va hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sai ky)) tang ma hoa. hieu va ((dao xuc) OR (dao xu)) va hanh vai cuu tre*.