Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
va thanh » gia thanh, ban thanh, va tinh
cam truc » cau truc, nam truc, lam truoc
va hanh » van hanh, va danh, ban hanh
su sach » so sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
vu sach » vu bach, vu khach
vai su » va su, van su, lai su
va cam » va cham, va cac, va cao

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) or (vu sach)) ly nang xa hoi. hieu va cam truc ((va hanh) or (va thanh)) vai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ly nang xa hoi. hieu va cam truc ((va hanh) OR (va thanh)) vai su triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ly nang xa hoi. hieu va cam truc ((va hanh) or (va thanh)) vai su triet*.