Perhaps you should try some spelling variations:
chat huu » pham huu
hieu cao » chieu cao, hieu cac, hieu ca
huu cam » huu lam, huu tam, huu chau
dan tai » van tai, dan thi, han tai
dan vai » dan va, dan vat, den vai
sach ty » sach tu, sach thu, xach tay
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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 ty) or (sach y)) nang x hoi. hieu cao chat huu cam ((dan vai) OR (dan tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach y)) nang x hoi. hieu cao chat huu cam ((dan vai) OR (dan tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) or (sach y)) nang x hoi. hieu cao chat huu cam ((dan vai) OR (dan tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach y)) nang x hoi. hieu cao chat huu cam ((dan vai) OR (dan tai)) cua tre*.