Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
van cac » van hac, van cau, van bac
cac hoc » cach hoc, cac hop, bac hoc
danh vi » hanh vi, danh di, danh va
dinh vi » dinh ve, dinh viet, dinh tri
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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 (thuat san)) ky sang ma hoi. hieu van cac hoc va ((danh vi) or (dinh vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thuat san)) ky sang ma hoi. hieu van cac hoc va ((danh vi) OR (dinh vi)) cua te.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (thuat san)) ky sang ma hoi. hieu van cac hoc va ((danh vi) or (dinh vi)) cua te*.