Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » hieu qua
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
cua te » cua tu

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) or (lieu va)) pham duc va hanh thai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoa. ((hieu va) OR (lieu va)) pham duc va hanh thai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoa. ((hieu va) or (lieu va)) pham duc va hanh thai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoa. ((hieu va) or (lieu va)) pham duc va hanh thai ((cua tre) OR (cua te))*.