Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
su sach » so sach, vu sach
xuc van » duc van, luc van, vuc van
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
mang xa » mang may, dang xay, mang cua
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: su sach y ((((mang xa) or (lang xa))) or (nang ma)) hoi. hieu ve cham xuc van hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((((mang xa) OR (lang xa))) OR (nang ma)) hoi. hieu ve cham xuc van hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach y ((((mang xa) or (lang xa))) or (nang ma)) hoi. hieu ve cham xuc van hanh vi cuu tre*.