Perhaps you should try some spelling variations:
doc sach » toc sach, nuoc sach, dac sac
van dinh » van minh, van dich, va dinh
cham xuc » cam xuc, chat xuc, cham soc
qua cham » qua hai, qua cac, va cham
hoc sach » hoc sinh, hoc cac, hoc anh
ly cong » li cong, ky cong, le cong
cong ha » cong hoa, dong ha, cong tac
va hanh » van hanh, va thanh, va danh
ha hoi » hoa hoi, ha noi, xa hoi
di cua » dai cua, doi cua, de cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc sach) OR (hoc sach)) ly cong ha hoi. hieu qua cham xuc ((va hanh) or (van dinh)) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (hoc sach)) ly cong ha hoi. hieu qua cham xuc ((va hanh) OR (van dinh)) di cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc sach) OR (hoc sach)) ly cong ha hoi. hieu qua cham xuc ((va hanh) or (van dinh)) di cua te*".