Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hac dat » hoc dat, hoach dat, nhac dan
tac dat » tac da, tac dao, tac dau
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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) or (tu sach)) ky nang ma hoi. lieu va ((hac dat) OR (tac dat)) va thanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (tu sach)) ky nang ma hoi. lieu va ((hac dat) OR (tac dat)) va thanh vi cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (tu sach)) ky nang ma hoi. lieu va ((hac dat) OR (tac dat)) va thanh vi cua vat*".