Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh dai » thanh hai, thanh tai, thanh dat
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
va thanh » gia thanh, ban thanh, va tinh
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
te cac » tu cac, ve cac, te cao
va am » va lam, va cam

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) OR (hoc sach))) or (te cac)) ky nang x ho. hieu va am thuc va thanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((toc sach) OR (hoc sach))) OR (te cac)) ky nang x ho. hieu va am thuc va thanh dai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((toc sach) OR (hoc sach))) or (te cac)) ky nang x ho. hieu va am thuc va thanh dai cua triet*".