Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cau tren » cu tren, dau tren, ca tren
cham luc » cham soc, nhan luc, cham cuu
va doanh » van doanh, vay doanh, va danh
thi hang » thi hanh, thi nang, thi hong
ly hang » ly quang
hieu su » hieu sau, tieu su, hieu so
su cham » su pham, tu cham, vu cham
ty hang » ty xang, thu hang
van cau » van dau, van hau, van chat
te sach » toc sach
luc va » duc va, tuc va, loc va

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 ((((ty hang) OR (thi hang))) or (ly hang)) xa hoi. hieu su cham luc va doanh van cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((((ty hang) OR (thi hang))) OR (ly hang)) xa hoi. hieu su cham luc va doanh van cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((((ty hang) OR (thi hang))) or (ly hang)) xa hoi. hieu su cham luc va doanh van cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach ((((ty hang) OR (thi hang))) or (ly hang)) xa hoi. hieu su cham luc va doanh van cau tren*.