Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu viec » nhieu viec, hieu ve, sieu viet
cau triet » cau trieu, su triet, cua triet
viec cac » vien cac, viec cua, viec lam
danh vai » danh sai, danh va, doanh van
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
so van » su van

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y nang ma hoi. hieu viec cac ((so van) OR (vo van)) danh vai ((cuu tre) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang ma hoi. hieu viec cac ((so van) OR (vo van)) danh vai ((cuu tre) OR (cau triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang ma hoi. hieu viec cac ((so van) OR (vo van)) danh vai ((cuu tre) or (cau triet))*".