Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh thai » nhanh thai, hinh thai, hanh tai
thu sach » tu sach, thuoc sach, thu hoach
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (thuat sach)) y nang x hoi. hieu va cac nuoc va hanh thai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) y nang x hoi. hieu va cac nuoc va hanh thai ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuat sach)) y nang x hoi. hieu va cac nuoc va hanh thai ((cua tre) or (cua te))*".