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

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