Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
nuoc van » nuoc va, nuoc san, luoc van
cap nuoc » dat nuoc
te sach » toc sach
cao hoa » cao hoat, cao khoa, cau hoa
ly nang » ky nang, ly hang, ly vang
van cap » van cau, van dap, van ca
y nang » ky nang, v nang, may nang
tai va » thai va, tri va, dai va

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)) cao hoa. hieu van cap nuoc van hanh ((tai va) OR (mai va)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) cao hoa. hieu van cap nuoc van hanh ((tai va) OR (mai va)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) or (ly nang)) cao hoa. hieu van cap nuoc van hanh ((tai va) OR (mai va)) triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) or (ly nang)) cao hoa. hieu van cap nuoc van hanh ((tai va) OR (mai va)) triet*.