Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuoc sinh
thuat sach » thuat lanh, thuat san
cac truc » cau truc, cac tru, cac trung
truc van » truc va, thuc van, truc ban
van tuan » van quan, van ban, anh tuan
tuan dai » toan dai, tuan tai, quang dai
va trien » va truyen, va thiet, va tuyen
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
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 sach)) y nang ma hoi. lieu va cac truc van tuan dai va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (thuat sach)) y nang ma hoi. lieu va cac truc van tuan dai va trien.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thuat sach)) y nang ma hoi. lieu va cac truc van tuan dai va trien*.