Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
sieu viet » su viet, dien viet, bien viet
hieu viec » nhieu viec, hieu ve, hieu hien
quan cua » quan luan, ban cua, gian cua
va trinh » van trinh, va tinh, lap trinh
te sach » toc sach
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
nang xa » nang x, 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: te sach ty ((nang xa) OR (lang xa)) hoi. ((hieu viec) or (sieu viet)) cam duc va trinh quan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (lang xa)) hoi. ((hieu viec) OR (sieu viet)) cam duc va trinh quan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang xa) OR (lang xa)) hoi. ((hieu viec) or (sieu viet)) cam duc va trinh quan cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) OR (lang xa)) hoi. ((hieu viec) or (sieu viet)) cam duc va trinh quan cua tre*.