Perhaps you should try some spelling variations:
trinh lieu » trinh lich, trinh dien, binh lieu
trinh dieu » trinh dien, tinh dieu, trinh dinh
hoc tieng » hoc hien
tieng han » tieng anh
gia manh » gia anh, gia hanh, gia lanh
manh cua » doanh cua, ban cua
viet bac » viet bao, vien bach, viet sach
bac hoc » bai hoc, bac ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: giao ((trinh lieu) or (trinh dieu)) gia manh cua nguoi viet bac hoc tieng han~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao ((trinh lieu) OR (trinh dieu)) gia manh cua nguoi viet bac hoc tieng han*.