Perhaps you should try some spelling variations:
vanh dai » van dai, vanh tai, lanh dao
tu sach » thu sach, te sach, tu cach
dai cuu » dai cua, dai huu
va vanh » va van, va danh, va hanh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va

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 (su sach)) ((ky lang) or (ky tang)) xa hoi. hieu va cac xuc va vanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ((ky lang) OR (ky tang)) xa hoi. hieu va cac xuc va vanh dai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ((ky lang) or (ky tang)) xa hoi. hieu va cac xuc va vanh dai cuu tre*.