Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thue dang » thu dang, thuoc dang, thien dang
duc manh » suc manh, duc anh, duc minh
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc van » duc va, duc tan, duc phan
cua tre » cua te, cuu tre, cua triet
cua tu » cua tuc, cua su, cua cu

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