Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu vien » hieu hien, hieu viec, thieu nien
bach tuoc » sach duoc, sach nuoc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va xanh » va danh, va anh, va banh

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty nang xa hoi. hieu vien bach tuoc ((va xanh) or (va hanh)) di ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu vien bach tuoc ((va xanh) OR (va hanh)) di ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. hieu vien bach tuoc ((va xanh) or (va hanh)) di ((cua tre) OR (cua triet))*".