Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
tham xuc » tham nuoc, tham thuc, pham duc
te sach » toc sach
cua tre » cuu tre, cua triet, dua tren
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
xuc va » duc va, tuc va, luc va
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 thu ((nang x) or (lang xa)) hoi. hieu va tham xuc va hanh di ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu ((nang x) OR (lang xa)) hoi. hieu va tham xuc va hanh di ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu ((nang x) or (lang xa)) hoi. hieu va tham xuc va hanh di ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach thu ((nang x) or (lang xa)) hoi. hieu va tham xuc va hanh di ((cua tre) OR (cua te))*.