Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nhan luc » nang luc
van doan » van doanh, van toan, van hoan
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
va nhan » van nhan, ca nhan, va phan
luc van » luoc van, luu van, duc van
cua tre » cua te, cuu tre, dua tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty xang xa hoi. lieu va nhan luc van doan va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty xang xa hoi. lieu va nhan luc van doan va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: so sach ty xang xa hoi. lieu va nhan luc van doan va ((cua tre) or (cua triet))*.