Perhaps you should try some spelling variations:
cac thue » cuc thue, cac thu, cach thuc
su sach » so sach, vu sach
ly nang » ky nang, ly hang, ly quang
ly vang » ly hang, ly van, ly quang
hieu ve » hieu va, hieu van
thue va » thuc va, thuyet va, thuc vat
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
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: su sach ((ly nang) or (ly vang)) xa hoi. hieu ve cac thue va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly nang) OR (ly vang)) xa hoi. hieu ve cac thue va danh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ly nang) or (ly vang)) xa hoi. hieu ve cac thue va danh vi cua tre*.