Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, tu cach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
nam qua » nam quan, nam cua, nam mua
qua van » quan van, qua ban, qua san
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) y nang xa hoi. thien van nam qua van hanh di ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) y nang xa hoi. thien van nam qua van hanh di ((cua tre) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) y nang xa hoi. thien van nam qua van hanh di ((cua tre) or (cua triet))*.