Perhaps you should try some spelling variations:
dien viet » tieng viet, trien viet, gian viet
trinh van » trinh han, trinh quan, trinh toan
van trinh » van thinh, van tinh, dan trinh
su sach » so sach, vu sach
van cua » vang cua, ban cua, dan cua
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa

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 ty ((nang xa) OR (nang x)) hoi. ((hieu ve) or (dien viet)) cam xuc van trinh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (nang x)) hoi. ((hieu ve) OR (dien viet)) cam xuc van trinh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang xa) OR (nang x)) hoi. ((hieu ve) or (dien viet)) cam xuc van trinh van cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) OR (nang x)) hoi. ((hieu ve) or (dien viet)) cam xuc van trinh van cua tre*.