Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
nhan luc » nang luc
van nhan » van phan, van thanh, danh nhan
thu sach » thuat sach, thuoc sach, thu hoach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
va hanh » van hanh, va thanh, va danh
tu sach » su sach, te sach, tu cach
luc va » duc va, tuc va, loc va
tai su » tai so, tai tu, 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: ((tu sach) or (thu sach)) ky ((nang xa) or (lang xa)) hoi. hieu van nhan luc va hanh tai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky ((nang xa) OR (lang xa)) hoi. hieu van nhan luc va hanh tai su triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky ((nang xa) or (lang xa)) hoi. hieu van nhan luc va hanh tai su triet*.