Perhaps you should try some spelling variations:
kho tang » cao tang
tang dai » tang tai, tang dan, lang dai
van hanh » van thanh, ban hanh, van anh
sac kho » suc khoe, cac khoi, dac khoa
dai hoi » dai hoc, dai hai, dai moi
hieu va » lieu va, hieu qua
va chao » va cao, va chat, va cham
va hanh » va thanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac kho tang dai hoi. hieu va chao xu ((va hanh) or (van hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac kho tang dai hoi. hieu va chao xu ((va hanh) OR (van hanh)) vi cua tre*.