Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, pham duc
dang van » hoang van, hang va
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
mang xa » lang xa, mang may, dang xay
cuu tre » cua tre, cau tren, cau treo
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 ((mang xa) or (dang van)) hoi. hieu va ((cham xuc) OR (cham soc)) van hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((mang xa) OR (dang van)) hoi. hieu va ((cham xuc) OR (cham soc)) van hanh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((mang xa) or (dang van)) hoi. hieu va ((cham xuc) OR (cham soc)) van hanh vi cuu tre*".