Perhaps you should try some spelling variations:
dung tri » dung tai, dung tren, dung sai
van dung » van dong, xay dung, tin dung
nam thuc » nam thuoc, am thuc, nam thu
cua tre » cua te, cuu tre, cua triet
cam tuc » cam xuc, cam tu, dam thuc
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
hieu va » hieu qua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa hoi

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 ky dang ha hoi. ((hieu va) OR (lieu va)) ((cam tuc) or (nam thuc)) van dung tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dang ha hoi. ((hieu va) OR (lieu va)) ((cam tuc) OR (nam thuc)) van dung tri cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky dang ha hoi. ((hieu va) OR (lieu va)) ((cam tuc) or (nam thuc)) van dung tri cua tre*".