Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
dung tren » dung trong, dung trung
sach ly » sach y, sach lo, sach ty
ly tang » le tang, ly hang, ly vang
tang ma » mang may, tang van
vi dung » va dung, vi ung, vi dong
ma hoi » mai hoi, xa hoi, ma hoa
va cam » va cham, va cac, va cao
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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 ly tang ma hoi. lieu va cam ((xuc va) or (tuc va)) hanh vi dung tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ly tang ma hoi. lieu va cam ((xuc va) OR (tuc va)) hanh vi dung tren.
• Adding a wildcard symbol may retrieve word variants: thuat sach ly tang ma hoi. lieu va cam ((xuc va) or (tuc va)) hanh vi dung tren*.