Perhaps you should try some spelling variations:
huy hoang » huy dong, huy vong
ty hoang » ty hang, thi hoang, duy hoang
hoc duoc » hoc nuoc, hoa duoc, hoc dung
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
duoc va » nuoc va, duc va, duoc ma
va hanh » van hanh, va thanh, va danh
cua cu » cua chu, cua cau, cua co
va hoc » van hoc
cua su » qua 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 ((ty hoang) OR (huy hoang)) xa hoi. hieu va hoc duoc va hanh vai ((cua cu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty hoang) OR (huy hoang)) xa hoi. hieu va hoc duoc va hanh vai ((cua cu) OR (cua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty hoang) OR (huy hoang)) xa hoi. hieu va hoc duoc va hanh vai ((cua cu) or (cua su))".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty hoang) OR (huy hoang)) xa hoi. hieu va hoc duoc va hanh vai ((cua cu) or (cua su))*.