Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh vai » thanh hai, thanh van, thanh tai
cua tren » dua tren, ca tren, cua tre
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
vai cua » dai cua, hai cua, lai cua
tu sach » thu sach, su sach, te sach
ma hoi » mai hoi, ma hoa, me hoi
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thuoc sach)) ky nang ((ma hoi) or (xa hoi)). hieu van cam tuc va thanh vai cua tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) ky nang ((ma hoi) OR (xa hoi)). hieu van cam tuc va thanh vai cua tren.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) ky nang ((ma hoi) or (xa hoi)). hieu van cam tuc va thanh vai cua tren*.