Perhaps you should try some spelling variations:
hanh gia » danh gia, thanh gian, hinh giao
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
hang ca » nang cao, hang tai, hang dau
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
va hanh » van hanh, va thanh, va danh
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
gia su » gia suc, giao su, gia sa

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 thieu ((hang ca) or (hang va)) hoi. hieu va cam luc va hanh gia su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thieu ((hang ca) OR (hang va)) hoi. hieu va cam luc va hanh gia su triet.
• Adding a wildcard symbol may retrieve word variants: su sach thieu ((hang ca) or (hang va)) hoi. hieu va cam luc va hanh gia su triet*.