Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
tai doanh » trai doanh, tri doanh, lai doanh
dua tren » dung tren
cham huu » pham huu, chat huu, cham cuu
sach ly » sach y, sach lo, sach ty
cua tre » cuu tre, cua triet, cua thep
tu sach » thu sach, su sach, te sach
huu tai » khau tai, huu tuan
va cham » va chat, va tham
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
cua te » cua tu

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 ly nang xa hoi. hieu va cham huu tai doanh van ((((cua tre) OR (dua tren))) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang xa hoi. hieu va cham huu tai doanh van ((((cua tre) OR (dua tren))) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly nang xa hoi. hieu va cham huu tai doanh van ((((cua tre) OR (dua tren))) or (cua te))*".