Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
manh han » manh hai, manh hon, anh han
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
cao suc » cao su, cao duc
han tai » hang tai, nhan tai, van tai
cuu tre » cua tre, cau tren, cau treo
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: su sach y nang xa hoi. ((hieu ve) OR (hieu va)) cao suc manh han tai ((cuu tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. ((hieu ve) OR (hieu va)) cao suc manh han tai ((cuu tre) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. ((hieu ve) OR (hieu va)) cao suc manh han tai ((cuu tre) or (cua triet))*.