Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
thi nang » thi cong, ki nang, thi hanh
thi hang » thi hanh, thi hong, thi thanh
tu sach » thu sach, su sach, te sach
tu hang » thu hang, tu hanh, tu hung
hieu va » lieu va, hieu qua
xuc tan » duc tan, xuc tac, xuc ban
san cua » sang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
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 (((thi hang) OR (thi nang)))) xa hoi. hieu va cam xuc tan thanh san cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu hang) OR (((thi hang) OR (thi nang)))) xa hoi. hieu va cam xuc tan thanh san cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tu hang) or (((thi hang) OR (thi nang)))) xa hoi. hieu va cam xuc tan thanh san cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu hang) or (((thi hang) OR (thi nang)))) xa hoi. hieu va cam xuc tan thanh san cua tre*.