Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thuat lap » thuat lanh, thuat xay, thuat bai
hanh dai » hanh tai, hanh dao, vanh dai
va triet » va thiet, va trien, ve triet
nang ma » tang ma, sang ma, nang cao
dau khu » dau khi, dau thau, cau khau
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
va dau » va dao
khu va » khau va, thu va, khu vu
dai va » mai va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) or (thuat lap)) y nang ma hoi. lieu va dau khu va hanh dai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (thuat lap)) y nang ma hoi. lieu va dau khu va hanh dai va triet.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thuat lap)) y nang ma hoi. lieu va dau khu va hanh dai va triet*.