Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cho hoc » co hoc, khoa hoc
ly hang » ly quang
ty hang » ty xang, thi hang, thu hang
ty nang » ky nang, ty xang, ly nang
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((ty nang) or (((ty hang) OR (ly hang)))) cho hoc. hieu ve cac xuc van hanh vai cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ty nang) OR (((ty hang) OR (ly hang)))) cho hoc. hieu ve cac xuc van hanh vai cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ty nang) or (((ty hang) OR (ly hang)))) cho hoc. hieu ve cac xuc van hanh vai cua cau*".