Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
van hoi » van hoa, van hoc, van hoe
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, cua triet
bai ky » sai ky, bac ky, dai ky
ban ky » van ky, dan ky
va nam » ha nam, va nay
xuc va » duc va, tuc va, luc va
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: te ((bai ky) or (ban ky)) lang van hoi. hieu ((va nam) OR (van nam)) xuc va tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((bai ky) OR (ban ky)) lang van hoi. hieu ((va nam) OR (van nam)) xuc va tinh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((bai ky) or (ban ky)) lang van hoi. hieu ((va nam) OR (van nam)) xuc va tinh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((bai ky) or (ban ky)) lang van hoi. hieu ((va nam) OR (van nam)) xuc va tinh vi cua tre*.