Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
doanh thu » doanh tai
pham thuc » phap thuc, pham chuc, pham thu
vu khach » vu khanh, vu khac, vay khach
va doanh » van doanh, vay doanh, va danh
vu sach » vu bach, su sach
thu cua » thuc cua, hu cua, tu cua
hieu va » lieu va, hieu qua
xang xa » lang xa, mang xa, ang xa
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: ((vu sach) OR (vu khach)) ty xang xa hoi. hieu va ((pham thuc) or (nham thuc)) va doanh thu cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu khach)) ty xang xa hoi. hieu va ((pham thuc) OR (nham thuc)) va doanh thu cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu khach)) ty xang xa hoi. hieu va ((pham thuc) or (nham thuc)) va doanh thu cua te*".