Perhaps you should try some spelling variations:
thieu nien » thien nhien
nien coc » nien cong, vien cac, dien cuc
van hanh » van thanh, ban hanh, van ban
su triet » su viet, su tien, ve triet
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
van anh » van thanh, tuan anh, van minh
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
vai su » va su, van su, lai su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((nang xa) or (lang xa)) hoi. thieu nien coc luc ((van hanh) or (van anh)) vai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang xa) OR (lang xa)) hoi. thieu nien coc luc ((van hanh) OR (van anh)) vai su triet.
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (lang xa)) hoi. thieu nien coc luc ((van hanh) or (van anh)) vai su triet*.