Perhaps you should try some spelling variations:
hanh tuc » nhanh thuc, hanh thuoc, hanh phuc
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
hanh tu » anh tu, danh tu
xa danh » va danh, dia danh, nam danh
danh va » doanh va, hanh va, anh va
cua tre » cua te, cuu tre, cua triet
sach o » sach lo, sac o, sach y
o lang » hoa lang, hoi lang
va cua » va chua, via cua, ca cua

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 o lang xa hoi. hieu qua ((hanh tuc) or (hanh tu)) xa danh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach o lang xa hoi. hieu qua ((hanh tuc) OR (hanh tu)) xa danh va cua tre*.