Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu ve » hieu va, hieu van
via cua » gia cua, gian cua, giau cua
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
luc va » tuc va, loc va
va cua » va chua, ca cua, ma cua
x hoi » xa hoi, o hoi, x ho

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 y nang x hoi. hieu ve cam ((luc va) or (duc va)) hanh ((va cua) OR (via cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang x hoi. hieu ve cam ((luc va) OR (duc va)) hanh ((va cua) OR (via cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang x hoi. hieu ve cam ((luc va) or (duc va)) hanh ((va cua) OR (via cua)) tre*".