Perhaps you should try some spelling variations:
dang thanh » dong thanh, dang hanh, hoang thanh
thanh vai » thanh hai, thanh van, thanh tai
thuc dang » thuoc dang, thuc dan, thuc dung
su triet » su viet, su tien, ve triet
nam thuc » nam thuoc, am thuc, nam thu
hieu ha » hieu hoa, hieu va, hieu ca
su sach » vu sach
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
so sach » so sanh, bo sach, co sach
vai su » va su, van su, lai su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (so sach)) ky ((nang xa) or (nang ma)) hoi. hieu ha nam thuc dang thanh vai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky ((nang xa) OR (nang ma)) hoi. hieu ha nam thuc dang thanh vai su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky ((nang xa) or (nang ma)) hoi. hieu ha nam thuc dang thanh vai su triet*".