Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
cua triet » cua viet, va triet
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang
du va » dau va, tu va, su 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 ma hoa. hieu va cac du va thanh dat ((cua tre) or (((cua triet) OR (su triet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoa. hieu va cac du va thanh dat ((cua tre) OR (((cua triet) OR (su triet)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoa. hieu va cac du va thanh dat ((cua tre) or (((cua triet) OR (su triet))))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoa. hieu va cac du va thanh dat ((cua tre) or (((cua triet) OR (su triet))))*.