Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
nang mai » nang ma, nang tai, lang mai
cua tre » cua te, cuu tre, dua tren
te sach » toc sach
hieu ve » hieu va, hieu van
cac suc » cao suc, cac nuoc, cac cuoc
mai hoi » mai khoi, dai hoi, lai hoi
va hanh » van hanh, va danh, ban hanh
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac

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