Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » chat xuc, cham soc, pham duc
hanh di » hanh vi, hanh de, hang di
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
sach lo » sach dao, sach doi, sach hoi
cuu tre » cua tre, cau tren, cau treo
sach o » sac o, sach y, mach o
di cuu » di cau, di cua, dinh cuu

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) OR (sach lo)) lang xa hoi. hieu ve ((cham xuc) or (cam xuc)) van hanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach o) OR (sach lo)) lang xa hoi. hieu ve ((cham xuc) OR (cam xuc)) van hanh di cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach o) OR (sach lo)) lang xa hoi. hieu ve ((cham xuc) or (cam xuc)) van hanh di cuu tre*".