Perhaps you should try some spelling variations:
nang doc » nang luc
tham tuc » tham thuc, thai tuc, nham thuc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
doc hoi » duoc hoi, hoc hoi, doc hai
hieu va » lieu va
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang doc hoi. ((hieu va) OR (hieu qua)) tham tuc va hanh vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang doc hoi. ((hieu va) OR (hieu qua)) tham tuc va hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang doc hoi. ((hieu va) OR (hieu qua)) tham tuc va hanh vi cuu tre*.