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
hanh cua » manh cua, hang cua, doanh cua
hanh sua » hinh su, hanh va, hanh tu
viet bao » viec bao, viet lao, viet bac
bao hoc » bai hoc, bao goc, bac hoc

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)) giao ((hanh cua) OR (hanh sua)) nguoi viet bao hoc tieng han~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao ((trinh lieu) OR (trinh dieu)) giao ((hanh cua) OR (hanh sua)) nguoi viet bao hoc tieng han.
• The words AND, OR and NOT may confuse the search; try adding quotes: "giao ((trinh lieu) or (trinh dieu)) giao ((hanh cua) OR (hanh sua)) nguoi viet bao hoc tieng han".
• Adding a wildcard symbol may retrieve word variants: giao ((trinh lieu) or (trinh dieu)) giao ((hanh cua) OR (hanh sua)) nguoi viet bao hoc tieng han*.