Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cat cua » chat cua, ca cua, mat cua
dan cat » dan ca, dan dat, dan cac
su sach » vu sach
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
soc va » hoc va, loc va, doc va
va dan » ca dan, va dao, va dau

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) or (so sach)) y nang ma hoi. ((hieu va) or (hieu qua)) cham soc va dan cat cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y nang ma hoi. ((hieu va) OR (hieu qua)) cham soc va dan cat cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) y nang ma hoi. ((hieu va) or (hieu qua)) cham soc va dan cat cua triet*.