Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, hieu ve
nhan luc » nang luc
ban hanh » ban hang
va tuyen » va truyen, tac tuyen, ke tuyen
su triet » su viet, su tien, ve triet
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
luc ban » duc ban, cuc ban, luc bat

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang xa hoi. ((hieu van) OR (lieu va)) nhan luc ban hanh vi ((va tuyen) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang xa hoi. ((hieu van) OR (lieu va)) nhan luc ban hanh vi ((va tuyen) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang xa hoi. ((hieu van) OR (lieu va)) nhan luc ban hanh vi ((va tuyen) or (su triet))*".