Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
khien cac » hien cac, khien cau, thien cac
dinh vai » dinh vi, dinh va, dinh tai
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
cac cao » cac co, ca cao, bac cao
cua tre » cua te, cuu tre, dua tren
cao va » cao van, tao va, co va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang xa hoi. dieu khien cac cao va ((dinh vai) OR (dinh van)) ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. dieu khien cac cao va ((dinh vai) OR (dinh van)) ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. dieu khien cac cao va ((dinh vai) OR (dinh van)) ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. dieu khien cac cao va ((dinh vai) OR (dinh van)) ((cua tre) or (cua triet))*.