Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
thang cua » thong cua, hang cua, than cua
hieu van » hieu va, thien van, lieu va
va nhanh » va thanh, va hanh, va nhan
bac luc » bao luc
van bac » van ban, van bao, van hac
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
so sanh » do sanh
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (so sanh)) ty ((lang xa) or (nang x)) hoi. hieu van bac luc va nhanh thang cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (so sanh)) ty ((lang xa) OR (nang x)) hoi. hieu van bac luc va nhanh thang cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu bach) or (so sanh)) ty ((lang xa) or (nang x)) hoi. hieu van bac luc va nhanh thang cua tre*.