Perhaps you should try some spelling variations:
thanh tinh » thanh binh, nhanh tinh, than kinh
doi chieu » doc hieu, doi chi, mot chieu
ban huong » bang phuong, ban hang, anh huong
ho chieu » theo chieu, hoc thieu, mot chieu
tinh cua » trinh cua, sinh cua, tinh chat
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doi chieu)) xanh - thanh tinh cua ban huong dan ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - thanh tinh cua ban huong dan ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) xanh - thanh tinh cua ban huong dan ((toan tai) or (toan ban))*.