Perhaps you should try some spelling variations:
thay nuoc » tham nuoc, tray nuoc, thoat nuoc
toc sach » hoc sach, thuoc sach, nuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
cau treo » cau theo, cau tren, cau triet
doc sach » hoc sach, nuoc sach, dac sac
ty nang » ky nang, ty xang, ty hang
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
va thay » va tham, la thay, va hay

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) or (doc sach)) ty nang cao hoi. hieu va thay nuoc va hanh lai ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ty nang cao hoi. hieu va thay nuoc va hanh lai ((cua tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (doc sach)) ty nang cao hoi. hieu va thay nuoc va hanh lai ((cua tre) or (cau treo))*.