Perhaps you should try some spelling variations:
danh dien » dinh dien, danh kien, danh lien
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » hieu qua
dien cu » dien cuc, dien cua, dien tu
cu treo » cau treo, cu tren, cau tren
y nang » ky nang, ly nang, v nang
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: te sach y nang ma hoi. ((hieu va) or (lieu va)) cam ((xuc va) OR (luc va)) danh dien cu treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. ((hieu va) OR (lieu va)) cam ((xuc va) OR (luc va)) danh dien cu treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoi. ((hieu va) or (lieu va)) cam ((xuc va) OR (luc va)) danh dien cu treo".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. ((hieu va) or (lieu va)) cam ((xuc va) OR (luc va)) danh dien cu treo*.