Perhaps you should try some spelling variations:
bach tuoc » sach duoc, sach nuoc
cuc triet » cua triet, su triet, cac trieu
hanh tai » thanh tai, hang tai, han tai
kly nang » ky nang, ki nang, kha nang
bac tuc » bac tu, bac thua
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
ly nang » ky nang, ly hang, ly vang

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ly nang) or (kly nang)) xa hoi. hieu va ((bac tuc) or (bach tuoc)) va hanh tai cuc triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly nang) OR (kly nang)) xa hoi. hieu va ((bac tuc) OR (bach tuoc)) va hanh tai cuc triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((ly nang) or (kly nang)) xa hoi. hieu va ((bac tuc) or (bach tuoc)) va hanh tai cuc triet*.