Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
dung tren » dung trong, dung trung
tang ma » mang may, tang van
va cham » va chat, va tham
vi dung » va dung, vi ung, vi dong
y tang » ky tang, 6 tang, 7 tang
ma hoi » mai hoi, xa hoi, ma hoa
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 tang 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 tang 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 tang ma hoi. lieu va cham ((xuc va) or (luc va)) hanh vi dung tren*.