Perhaps you should try some spelling variations:
kho trung » khoa trung, khoi truong, cho truong
trung ha » trung hoc, trung tam, trung cap
thuc van » thuc vat, thuc dan, thuc va
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, chuc van
cua tre » cua te, cuu tre, cua triet
sai kho » dai kho, tai khoa, dai khoa
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
ha hoi » hoa hoi, ha noi, xa hoi
vi cua » vai cua, di cua
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai kho trung ha hoi. hieu va chat ((xuc van) or (((vuc van) OR (thuc van)))) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai kho trung ha hoi. hieu va chat ((xuc van) OR (((vuc van) OR (thuc van)))) hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai kho trung ha hoi. hieu va chat ((xuc van) or (((vuc van) OR (thuc van)))) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sai kho trung ha hoi. hieu va chat ((xuc van) or (((vuc van) OR (thuc van)))) hanh vi cua tre*.