Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
vu sang » vua sang, vu dang, vu san
sang ky » sang kyo, dang ky, tang ky
va tinh » may tinh
nam tu » nam thu, nam thuc
va dan » ca dan, va dao, va dau
ki su » ky su

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sang ky nang x ho. hieu van nam tu ((va tinh) or (va dan)) ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sang ky nang x ho. hieu van nam tu ((va tinh) OR (va dan)) ki su triet.
• Adding a wildcard symbol may retrieve word variants: vu sang ky nang x ho. hieu van nam tu ((va tinh) or (va dan)) ki su triet*.