Perhaps you should try some spelling variations:
dung tren » dung trong, dung trung
sach lo » sach dao, sach doi, sach hoi
nang ma » tang ma, sang ma, nang cao
sach ly » sach y, sach ty, sach hay
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, 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 ly) OR (sach lo)) nang ma hoi. lieu va cam ((xuc va) or (luc va)) hanh vi dung tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach ly) OR (sach lo)) nang ma hoi. lieu va cam ((xuc va) OR (luc va)) hanh vi dung tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach ly) OR (sach lo)) nang ma hoi. lieu va cam ((xuc va) or (luc va)) hanh vi dung tren".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach ly) OR (sach lo)) nang ma hoi. lieu va cam ((xuc va) or (luc va)) hanh vi dung tren*.