Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
thanh lap » thanh san, phan lap, thanh hai
van chat » cao chat
thu nang » thi nang, thu hang, thu bang
thi hang » thi hanh, thi nang, thi hong
lap cua » lai cua, tap cua, lam cua
tu sach » thu sach, su sach, te sach
van cam » van nam, van lam, van cau
cua tre » cua te, cuu tre, cua triet

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 ((thu nang) or (thi hang)) xa hoi. hieu ((van cam) or (van chat)) duc tan thanh lap cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu nang) OR (thi hang)) xa hoi. hieu ((van cam) OR (van chat)) duc tan thanh lap cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu nang) or (thi hang)) xa hoi. hieu ((van cam) or (van chat)) duc tan thanh lap cua tre*.