Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
dung tren » dung trong, dung trung
ly nang » ky nang, ly hang, ly vang
vi dung » va dung, vi ung, vi dong
va cham » va chat, va tham
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, v nang, may nang
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va

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) OR (ly nang)) ma hoi. lieu va cham ((xuc va) or (luc va)) hanh vi dung tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((y nang) OR (ly nang)) ma hoi. lieu va cham ((xuc va) OR (luc va)) hanh vi dung tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((y nang) OR (ly nang)) ma hoi. lieu va cham ((xuc va) or (luc va)) hanh vi dung tren".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((y nang) OR (ly nang)) ma hoi. lieu va cham ((xuc va) or (luc va)) hanh vi dung tren*.