Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
danh dau » lanh dao, hang dau, danh tu
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
dau cua » dai cua, day cua, cau cua
tuc va » thuc va, truc va, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thu sach)) ky nang xa hoi. lieu va cham ((tuc va) or (tuc xa)) danh dau cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky nang xa hoi. lieu va cham ((tuc va) OR (tuc xa)) danh dau cua viet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky nang xa hoi. lieu va cham ((tuc va) or (tuc xa)) danh dau cua viet*.