Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van doanh » toan doanh, van dong, van thanh
sau nhan » sat nhan, sau chan, sau ngan
nhan luc » nang luc
hieu sau » hieu su, hieu suat, tieu su
luc van » luoc van, luu van, duc van
sach ky » sac ky, sach y, sach kem
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
cuu tre » cua tre, cau tren, cau treo

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 ky) OR (sach ty)) nang xa hoi. hieu sau nhan luc van doanh tai ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) nang xa hoi. hieu sau nhan luc van doanh tai ((cua triet) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) nang xa hoi. hieu sau nhan luc van doanh tai ((cua triet) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach ty)) nang xa hoi. hieu sau nhan luc van doanh tai ((cua triet) or (cuu tre))*.