Perhaps you should try some spelling variations:
tham xuc » tham nuoc, tham thuc, pham duc
va thanh » gia thanh, ban thanh, va tinh
va tham » van tham, va cham, va thuat
va hanh » van hanh, va danh, ban hanh
sach tu » sach thu, cach tu, sach ty
te sach » toc sach
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

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