Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
ban hang » ngan hang
va nang » van nang, da nang, kha nang
lam duc » lam duoc, pham duc, nam duoc
duc ban » duc tan, duc van, dua ban
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: thuat sach ((va nang) OR (cam nang)) xa hoi. ((hieu van) or (thien van)) lam duc ban hang va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((va nang) OR (cam nang)) xa hoi. ((hieu van) OR (thien van)) lam duc ban hang va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((va nang) OR (cam nang)) xa hoi. ((hieu van) or (thien van)) lam duc ban hang va cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((va nang) OR (cam nang)) xa hoi. ((hieu van) or (thien van)) lam duc ban hang va cua te*.