Perhaps you should try some spelling variations:
dan thanh » dang thanh, danh thanh, ban thanh
thu sach » thuat sach, thuoc sach, thu hoach
cam thuc » am thuc, nam thuc, cam thu
thuc dan » thuc hanh, hoc dan, thuc vat
thanh vi » hanh vi, thanh va, thanh ve
va triet » va thiet, va trien, ve triet
te sach » toc sach
tu sach » su sach, tu cach, vu sach
nang xa » nang x, lang xa, nang ma
va cam » va cham, va cac, va cao
vi va » vi van, vai va, vu va

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) or (((thu sach) OR (tu sach)))) ky nang xa hoi. lieu va cam thuc dan thanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (((thu sach) OR (tu sach)))) ky nang xa hoi. lieu va cam thuc dan thanh vi va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (((thu sach) OR (tu sach)))) ky nang xa hoi. lieu va cam thuc dan thanh vi va triet*".