Perhaps you should try some spelling variations:
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
toc sach » hoc sach, doc sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
nuoc van » nuoc va, nuoc san, luoc van
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
lai cuu » lai cua, lai chau, lai cuoc
cuu tre » cua tre, cau tren, cau treo
co hoi » co hoc, co loi
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang

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 ((y nang) OR (v nang)) ((co hoi) or (cau hoi)). hieu va tham nuoc van hanh lai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((y nang) OR (v nang)) ((co hoi) OR (cau hoi)). hieu va tham nuoc van hanh lai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((y nang) OR (v nang)) ((co hoi) or (cau hoi)). hieu va tham nuoc van hanh lai cuu tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ((y nang) OR (v nang)) ((co hoi) or (cau hoi)). hieu va tham nuoc van hanh lai cuu tre*.