Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
hieu ve » hieu va, hieu van
cac cua » cach cua, cac qua, ca cua
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
tu sach » thu sach, su sach, te sach
ve cac » va cac, vien cac
y lang » o lang, _ lang, tay lang

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 y lang xa hoi. hieu ve cac cua ban ((hanh vai) OR (hanh tai)) ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang xa hoi. hieu ve cac cua ban ((hanh vai) OR (hanh tai)) ((cua tre) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y lang xa hoi. hieu ve cac cua ban ((hanh vai) OR (hanh tai)) ((cua tre) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach y lang xa hoi. hieu ve cac cua ban ((hanh vai) OR (hanh tai)) ((cua tre) or (su triet))*.