Perhaps you should try some spelling variations:
thu nang » thi nang, thu bang, tho nang
thai cua » than cua, tai cuc, tri cua
thu hang » thi hang, thuc hanh, thu huong
nhan luc » nang luc
te sach » toc sach
tai cua » tai cuc, tri cua, dai cua
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
luc va » duc va, tuc va, loc va
va han » va phan, van han, va hanh
o hoi » co hoi, o hoc, o hai

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 ((thu nang) or (thu hang)) o hoi. hieu va nhan luc va han ((tai cua) OR (thai cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu nang) OR (thu hang)) o hoi. hieu va nhan luc va han ((tai cua) OR (thai cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thu nang) or (thu hang)) o hoi. hieu va nhan luc va han ((tai cua) OR (thai cua)) tu".
• Adding a wildcard symbol may retrieve word variants: te sach ((thu nang) or (thu hang)) o hoi. hieu va nhan luc va han ((tai cua) OR (thai cua)) tu*.