Perhaps you should try some spelling variations:
doanh ban » doanh bat, doanh van, doanh nhan
va doanh » van doanh, vay doanh, va danh
ban quan » van quan
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
cau loc » cau hoc, cau luc, cau long
hau loc » huu loc, phau hoc
quan te » quan he, quan ve, quang tue
y nang » ky nang, ly nang, v nang

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 y nang x ho. hieu va ((cau loc) or (hau loc)) va doanh ban quan te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x ho. hieu va ((cau loc) OR (hau loc)) va doanh ban quan te.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x ho. hieu va ((cau loc) or (hau loc)) va doanh ban quan te*.