Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
chau tre » chay tren, chau tho, cho tre
vu sach » vu bach, su sach, vu khach
ly nang » ky nang, ly hang, ly vang
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
nang o » nang co, nang ho, nang ro
ve cam » ve cham, ve cac, va cam
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (thuoc sach)) ly nang o hoi. hieu ve cam xuc van hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (thuoc sach)) ly nang o hoi. hieu ve cam xuc van hanh lai chau tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (thuoc sach)) ly nang o hoi. hieu ve cam xuc van hanh lai chau tre*.