Perhaps you should try some spelling variations:
dong hoa » dong hoc, dong co
cac phuc » cau phuc, khac phuc, cach thuc
phuc van » thuc van, phuc va, chuc van
van hanh » van thanh, ban hanh, van anh
ky dong » ly dong, ky dang, ky cong
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu va » lieu va, hieu qua
hanh de » hanh ve, hanh kem
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
te lai » te tai, te bai
lai ky » sai ky, dai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te lai ky dong hoa hoi. hieu va cac phuc van hanh de ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te lai ky dong hoa hoi. hieu va cac phuc van hanh de ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te lai ky dong hoa hoi. hieu va cac phuc van hanh de ((cua tre) or (cuu tre))*.