Perhaps you should try some spelling variations:
dung tren » dung trong, dung trung
tren cuu » trien cua, trinh cuu, tren co
van dung » van dong, xay dung, tin dung
qua cham » qua hai, qua cac, va cham
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
qua cam » qua cac, qua ca, qua cai
duc van » duc va, duc tan, duc manh
su hai » su tai
hai ky » thai ky, hoi ky, hai ly

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

• Performing a fuzzy search may retrieve terms with similar spellings: su hai ky ((nang xa) or (lang xa)) hoi. hieu ((qua cam) OR (qua cham)) duc van dung tren cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su hai ky ((nang xa) OR (lang xa)) hoi. hieu ((qua cam) OR (qua cham)) duc van dung tren cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su hai ky ((nang xa) or (lang xa)) hoi. hieu ((qua cam) OR (qua cham)) duc van dung tren cuu tre".
• Adding a wildcard symbol may retrieve word variants: su hai ky ((nang xa) or (lang xa)) hoi. hieu ((qua cam) OR (qua cham)) duc van dung tren cuu tre*.