Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thien van » thi van
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
nang xa » nang x, lang xa, nang ma
xa hanh » xa thanh, xa khanh, da hanh
cam tu » cam thu, nam tu, dam tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. thien van cam tu ((xa hanh) or (va hanh)) hai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. thien van cam tu ((xa hanh) OR (va hanh)) hai ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. thien van cam tu ((xa hanh) or (va hanh)) hai ((cua tre) OR (cua triet))*".