Perhaps you should try some spelling variations:
sach ngan » sach ngon, sach nha, sach han
ngan cong » nganh cong, nganh nong, ngan hang
thuat sua » thuat so, thuat san, thuat hoa
sua doanh » cua doanh, su doanh, luat doanh
doanh co » doanh cua, doanh va, anh co
tu sach » thu sach, su sach, te sach
cong ha » cong hoa, dong ha, cong tac

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 ngan cong ha đong luc ) or ( thuat sua doanh co khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach ngan cong ha đong luc ) OR ( thuat sua doanh co khi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach ngan cong ha đong luc ) or ( thuat sua doanh co khi đong luc ))*.