Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
thu nang » thu hang, tho nang, thu dang
doanh va » doan va, doanh tai, doanh cua
thu bang » thu ban, thu hang, chu bang
cham duc » pham duc, cham soc, pham duy
thi nang » thi cong, ki nang, thi hanh
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
duc vay » duc va, duc van, duc vy
hieu ve » hieu va, hieu van
va cua » va chua, via cua, ca cua
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 ((((thu nang) OR (thu bang))) or (thi nang)) xa hoi. hieu ve cham duc vay doanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((((thu nang) OR (thu bang))) OR (thi nang)) xa hoi. hieu ve cham duc vay doanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((((thu nang) OR (thu bang))) or (thi nang)) xa hoi. hieu ve cham duc vay doanh va cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((((thu nang) OR (thu bang))) or (thi nang)) xa hoi. hieu ve cham duc vay doanh va cua te*.