Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu nganh » vien nganh, hiem ngan, hieu manh
hoac khong » hoa khong, hoc khong, hay khong
thien anh » thien danh, tien anh, thien thanh
hua khong » hoa khong, cua khong, phuc khong
cong nang » cong ngang, cong lang, cong nong
nang hang » nang sang, hang hang, cang thang
hang cao » hoang cao, nang cao, hang ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu nganh) or (thien anh)) - hanh tranh ((hua khong) OR (hoac khong)) cong nang hang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (thien anh)) - hanh tranh ((hua khong) OR (hoac khong)) cong nang hang cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu nganh) or (thien anh)) - hanh tranh ((hua khong) OR (hoac khong)) cong nang hang cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) or (thien anh)) - hanh tranh ((hua khong) OR (hoac khong)) cong nang hang cao*.