Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh vai » hanh vi, hanh va, hanh tai
day hanh » day nhanh, day thanh, dao hanh
thuc day » thuc dan, thuc vat
nam thuc » nam thuoc, am thuc, nam thu
hieu he » hieu ve, hiem he, hieu le
tu sach » thu sach, te sach, tu cach
bia hoi » bia khoa, bia chai, gian hoi
su sach » so sach, vu sach
he nam » ha nam, nghe nam
ba hoi » xa hoi, ba hoa, ba voi
vai su » va su, van su, 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 (su sach)) thi thanh ((ba hoi) or (bia hoi)). hieu he nam thuc day hanh vai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) thi thanh ((ba hoi) OR (bia hoi)). hieu he nam thuc day hanh vai su triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) thi thanh ((ba hoi) or (bia hoi)). hieu he nam thuc day hanh vai su triet*.