Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
xanh di » danh di, vanh dai, xanh tai
xa xanh » xa thanh, cay xanh, mau xanh
va cham » va chat, va tham
te sach » toc sach
du hanh » dieu hanh, duy khanh, luu hanh
tu hanh » lu hanh, thuc hanh, thi hanh
di cua » dai cua, doi cua, de cua
va cam » va cac, va cao, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((tu hanh) OR (du hanh)) dai hoc. hieu ((va cam) or (va cham)) tuc xa xanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu hanh) OR (du hanh)) dai hoc. hieu ((va cam) OR (va cham)) tuc xa xanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tu hanh) OR (du hanh)) dai hoc. hieu ((va cam) or (va cham)) tuc xa xanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((tu hanh) OR (du hanh)) dai hoc. hieu ((va cam) or (va cham)) tuc xa xanh di cua triet*.