Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, vuc van
hieu va » lieu va
tang ma » mang may, tang van
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
sai ky » sac ky
vi cuu » vi luu, vinh cuu

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 ky) or (sai ky)) tang ma hoi. ((hieu va) or (hieu qua)) cam xuc van hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sai ky)) tang ma hoi. ((hieu va) OR (hieu qua)) cam xuc van hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sai ky)) tang ma hoi. ((hieu va) or (hieu qua)) cam xuc van hanh vi cuu tre*.