Perhaps you should try some spelling variations:
nhan luc » nang luc
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, tu cach, vu sach
doan vu » doan va, doan vi, doan tu
va doan » va doanh, van doan, va dan
ve nhan » ve nha, de nhan, va nhan
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
te sach » toc sach
luc va » duc va, tuc va, loc va
vu va » vu van, tu va, su va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((tu sach) or (te sach))) or (thu sach)) ky dang xa hoi. hieu ve nhan luc va doan vu va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (te sach))) OR (thu sach)) ky dang xa hoi. hieu ve nhan luc va doan vu va thiet.
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) or (te sach))) or (thu sach)) ky dang xa hoi. hieu ve nhan luc va doan vu va thiet*.