Perhaps you should try some spelling variations:
thanh gian » thanh giang, thach giang, thanh san
hanh gian » thanh giang, manh giang, dan gian
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
cua tre » cua te, cuu tre, cua triet
xuc xa » tuc xa, buc xa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y ((mang may) or (nang x)) hoi. hieu van cam xuc xa ((hanh gian) OR (thanh gian)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((mang may) OR (nang x)) hoi. hieu van cam xuc xa ((hanh gian) OR (thanh gian)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y ((mang may) or (nang x)) hoi. hieu van cam xuc xa ((hanh gian) OR (thanh gian)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach y ((mang may) or (nang x)) hoi. hieu van cam xuc xa ((hanh gian) OR (thanh gian)) cua tre*.