Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hanh tai » thanh tai, hang tai, han tai
cham tuc » nham thuc, pham thuc, tham thuc
van cham » van chat, van tham, va cham
sanh thi » anh thi, oanh thi, nhanh thi
hieu van » hieu va, thien van, lieu va
hang ca » hang va, nang cao, hang tai
hang xa » hoang xa, hang va, lang xa
xa hanh » xa thanh, xa khanh, va hanh
cuu tre » cua tre, cau treo
so sanh » do sanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh thi ((hang xa) or (hang ca)) hoi. hieu van cham tuc xa hanh tai ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh thi ((hang xa) OR (hang ca)) hoi. hieu van cham tuc xa hanh tai ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: so sanh thi ((hang xa) or (hang ca)) hoi. hieu van cham tuc xa hanh tai ((cuu tre) or (cau tren))*.