Perhaps you should try some spelling variations:
truong va » truong dai, truong cao, truong dao
hieu cao » chieu cao, hieu cac, hieu ca
trung va » trang va, trung ha, trung tam
danh dai » danh dau, danh di, danh sai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
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: tu sach ky nang x hoi. hieu cao chat ((trung va) or (truong va)) danh dai ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu cao chat ((trung va) OR (truong va)) danh dai ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu cao chat ((trung va) or (truong va)) danh dai ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu cao chat ((trung va) or (truong va)) danh dai ((cuu tre) OR (cua tre))*.