Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
thu nang » thu hang, thu bang, tho nang
phat tai » pham tai, phap tai, chat tai
thi nang » thi cong, ki nang, thi hanh
cham luc » cham soc, nhan luc, cham cuu
va cham » va chat, va tham
tai cua » thai cua, tai cuc, tri cua
hieu va » lieu va, hieu qua
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) ((thu nang) OR (thi nang)) x hoi. hieu va cham luc va phat tai cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ((thu nang) OR (thi nang)) x hoi. hieu va cham luc va phat tai cua tu".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ((thu nang) OR (thi nang)) x hoi. hieu va cham luc va phat tai cua tu*.