Perhaps you should try some spelling variations:
van trinh » van thinh, van tinh, dan trinh
trinh tai » trinh toan, trinh tu, trinh han
hoc sach » hoc sinh, hoc anh
hoc cac » hoc cao
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
v nang » va nang, vu nang, van nang
va nam » van nam, ha nam, va nay
nam tu » nam thu, nam thuc
tu van » tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) OR (hoc cac)) v nang xa hoi. hieu va nam tu van trinh tai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) OR (hoc cac)) v nang xa hoi. hieu va nam tu van trinh tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) OR (hoc cac)) v nang xa hoi. hieu va nam tu van trinh tai cuu tre*.