Perhaps you should try some spelling variations:
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
cau tuc » cau truc, cau luc, cau phuc
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
nang xa » nang x, lang xa, mang xa
cuu tre » cua tre, cau tren, cau treo
cau tu » dau tu, cau truc
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty ((nang xa) or (nang ma)) hoi. lieu va ((cau tuc) OR (cau tu)) va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (nang ma)) hoi. lieu va ((cau tuc) OR (cau tu)) va hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang xa) or (nang ma)) hoi. lieu va ((cau tuc) OR (cau tu)) va hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (nang ma)) hoi. lieu va ((cau tuc) OR (cau tu)) va hanh vi cuu tre*.