Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
than cua » nhan cua, thai cua, ban cua
toc sac » toc sach, toc san, hoc sach
nang xa » lang xa, nang ma, mang xa
van cau » van dau, van hau, van chat
cau luc » cau truc, cau phuc
sac ky » cac ky, sai ky
luc va » duc va, tuc va, loc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky ((nang xa) or (nang x)) hoi. hieu van cau luc va thanh than cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky ((nang xa) OR (nang x)) hoi. hieu van cau luc va thanh than cua te.
• Adding a wildcard symbol may retrieve word variants: toc sac ky ((nang xa) or (nang x)) hoi. hieu van cau luc va thanh than cua te*.