Perhaps you should try some spelling variations:
thuoc sai » thuoc tai, thuoc san, thuoc sach
van thanh » ban thanh, van tuan
thanh vai » thanh hai, thanh van, thanh tai
va triet » va thiet, va trien, cua triet
ve triet » va trien, su triet
luc van » luoc van, luu van, duc van
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ve cam » ve cham, ve cac, ve cai
sai ky » sac ky
ma hoi » mai hoi, xa hoi, ma hoa
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: thuoc sai ky sang ma hoi. hieu ((ve cam) OR (va cam)) luc van thanh vai ((va triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sai ky sang ma hoi. hieu ((ve cam) OR (va cam)) luc van thanh vai ((va triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sai ky sang ma hoi. hieu ((ve cam) OR (va cam)) luc van thanh vai ((va triet) or (ve triet))".
• Adding a wildcard symbol may retrieve word variants: thuoc sai ky sang ma hoi. hieu ((ve cam) OR (va cam)) luc van thanh vai ((va triet) or (ve triet))*.