Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh hai » thanh phan, thanh hoa, thanh san
thanh lap » thanh san, phan lap, thanh van
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cac dac » cac dai, cac bac, cac tac
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

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: su sach ty nang xa hoi. hieu va ((cac dac) OR (cac dan)) va ((thanh lap) OR (thanh hai)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu va ((cac dac) OR (cac dan)) va ((thanh lap) or (thanh hai)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu va ((cac dac) OR (cac dan)) va ((thanh lap) or (thanh hai)) cua triet*.