Perhaps you should try some spelling variations:
thuoc phien » thuc hien, phuoc hien, thuat phien
thuc hieu » thuc hien, thu hien, thuc tien
cac khoa » cac khoan, cac khoi, dac khoa
nhung bo » nhung bi, nhung bai, nhung don
hoc cac » hoc cao
khi cua » chi cua, thai cua
bo hon » bo ho, bo ion, ro hon
hon vi » chon vi, don vi, hon ai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cac khoa ((thuoc phien) or (thuc hieu)) khi cua ets : nhung bo hon vi đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cac khoa ((thuoc phien) OR (thuc hieu)) khi cua ets : nhung bo hon vi đai.
• Adding a wildcard symbol may retrieve word variants: hoc cac khoa ((thuoc phien) or (thuc hieu)) khi cua ets : nhung bo hon vi đai*.