Perhaps you should try some spelling variations:
tinh sang » tinh quang, tinh trang, trinh san
thu huong » thu cong
tinh san » trinh san, tinh son, sinh san
tu sach » thu sach, su sach, te sach
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
tu hang » thu hang, tu hanh, tu hung
va cam » va cham, va cac, va cao

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 ((tu hang) or (thu huong)) xa hoi. hieu va cam duc va ((tinh san) OR (tinh sang)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu hang) OR (thu huong)) xa hoi. hieu va cam duc va ((tinh san) OR (tinh sang)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tu hang) or (thu huong)) xa hoi. hieu va cam duc va ((tinh san) OR (tinh sang)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu hang) or (thu huong)) xa hoi. hieu va cam duc va ((tinh san) OR (tinh sang)) cua tre*.