Perhaps you should try some spelling variations:
nam thucc » nam thuoc, am thuc, nam thu
nam thuc » nam thuoc, am thuc, nam thu
te sach » toc sach
xa hanh » xa thanh, xa khanh, va hanh
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
vi cuu » vi luu, vinh cuu

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) OR (sang ma)) hoi. hieu va ((nam thucc) or (nam thuc)) xa hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang ma) OR (sang ma)) hoi. hieu va ((nam thucc) OR (nam thuc)) xa hanh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang ma) OR (sang ma)) hoi. hieu va ((nam thucc) or (nam thuc)) xa hanh vi cuu tre*".