Perhaps you should try some spelling variations:
dong khoa » duong khoa, dung khoa, dong hoa
cham xuc » cam xuc, chat xuc, cham soc
khoa hoi » khoan hoi, khoa hoc, khoa doi
thanh va » thanh van, thanh ha, thanh ve
so sach » so sanh, bo sach, co sach
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
sach ly » sach y, sach lo, sach ty
hien tu » khien tu
ly dong » ly dung, lao dong, huy dong
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ly dong khoa hoi. ((hien tu) OR (dien tu)) cham xuc van ((thanh va) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ly dong khoa hoi. ((hien tu) OR (dien tu)) cham xuc van ((thanh va) OR (hanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ly dong khoa hoi. ((hien tu) OR (dien tu)) cham xuc van ((thanh va) or (hanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ly dong khoa hoi. ((hien tu) OR (dien tu)) cham xuc van ((thanh va) or (hanh va)) cua tre*.