Perhaps you should try some spelling variations:
te sach » toc sach
duc van » duc va, duc tan, duc manh
xuc ban » duc ban, cuc ban, quoc ban
ve cham » va cham, ve chat, vu cham
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty ((nang ma) OR (tang ma)) hoi. hieu ve cham ((xuc ban) or (duc van)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang ma) OR (tang ma)) hoi. hieu ve cham ((xuc ban) OR (duc van)) hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang ma) OR (tang ma)) hoi. hieu ve cham ((xuc ban) or (duc van)) hanh vi cua tre*".