Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
tham xuc » tham nuoc, tham thuc, pham duc
toc sach » hoc sach, doc sach, thuoc sach
ky tang » ky nang, ky dang, kho tang
va tham » van tham, va cham, va thanh
xuc van » duc van, luc van, xuc ban
ky lang » ky nang, ky dang, tay lang
cua tre » cua te, cuu tre, dua tren
hieu va » lieu va, hieu qua
ha hoi » hoa hoi, ha noi, xa hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((ky lang) OR (ky tang)) ha hoi. hieu va tham xuc van hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ky lang) OR (ky tang)) ha hoi. hieu va tham xuc van hanh vi ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ky lang) OR (ky tang)) ha hoi. hieu va tham xuc van hanh vi ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ky lang) OR (ky tang)) ha hoi. hieu va tham xuc van hanh vi ((cua tre) or (cua triet))*.