Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
hieu van » hieu va, thien van, lieu va
cau luc » cau truc, cau phuc
cua tre » cuu tre, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
van cau » van dau, van hau, van chat
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
luc va » duc va, tuc va, loc va
sac ky » cac ky, sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) OR (sac ky)) nang xa hoi. hieu van cau luc va hanh tai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sac ky)) nang xa hoi. hieu van cau luc va hanh tai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sac ky)) nang xa hoi. hieu van cau luc va hanh tai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) OR (sac ky)) nang xa hoi. hieu van cau luc va hanh tai ((cua tre) or (cua te))*.