Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh cac » hang cac, hanh cat, nhanh cay
cap nuoc » dat nuoc
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
hieu va » hieu qua
ma hoi » mai hoi, xa hoi, ma hoa
cac su » cach su, cac sau, cac du

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 ((ky dang) or (ky tang)) ma hoi. ((hieu va) or (lieu va)) cap nuoc va hanh cac su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky dang) OR (ky tang)) ma hoi. ((hieu va) OR (lieu va)) cap nuoc va hanh cac su triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky dang) or (ky tang)) ma hoi. ((hieu va) or (lieu va)) cap nuoc va hanh cac su triet*.