Perhaps you should try some spelling variations:
hanh doi » thanh doi, hanh noi, hang doi
te sach » toc sach
hieu va » lieu va, hieu qua
doi cuu » doi cua, doi cuoc
va hanh » van hanh, va thanh, va danh
nam tuc » nam thuc, nam truc, nam tu
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu van
ly nang » ky nang, ly hang, ly vang
y nang » ky nang, v nang, may nang
tuc va » thuc va, truc va, tuc xa

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 ((y nang) OR (ly nang)) xa hoi. ((hieu ve) or (hieu va)) nam tuc va hanh doi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) xa hoi. ((hieu ve) OR (hieu va)) nam tuc va hanh doi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ly nang)) xa hoi. ((hieu ve) or (hieu va)) nam tuc va hanh doi cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ly nang)) xa hoi. ((hieu ve) or (hieu va)) nam tuc va hanh doi cuu tre*.