Perhaps you should try some spelling variations:
thoat nuoc » thuat nuoi
danh dien » dinh dien, danh kien, danh lien
toc sach » hoc sach, doc sach, thuoc sach
tham soc » cham soc, tham nuoc, thai son
cuc tre » duc tre, cua tre, cuc thue
va danh » va dinh, va dan, va hanh
cuu tre » cua tre, cau tren, cau treo
sach v » sach va, sach y, sach 2
nang o » nang co, nang ho, nang ro
v nang » va nang, vu nang, van nang
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: toc sach v nang o hoi. hieu qua ((tham soc) or (thoat nuoc)) va danh dien ((cuc tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang o hoi. hieu qua ((tham soc) OR (thoat nuoc)) va danh dien ((cuc tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach v nang o hoi. hieu qua ((tham soc) or (thoat nuoc)) va danh dien ((cuc tre) OR (cuu tre))*".