Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, va triet
nhan luc » nang luc
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
luc van » luoc van, luu van, duc van

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

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