Perhaps you should try some spelling variations:
thanh trung » thanh tung
thiet hach » thien hach, thuyet hach, thiet hai
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cua nhung » va nhung
cua hang » cua dang, cua cong, cua ban
than cap » khan cap, thanh lap, thanh cac
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet hach - thanh trung ((cua hang) or (cua nhung)) huong dan ((than cap) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet hach - thanh trung ((cua hang) OR (cua nhung)) huong dan ((than cap) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thiet hach - thanh trung ((cua hang) or (cua nhung)) huong dan ((than cap) or (phan cau))*.