Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
thong cong » trong cong, tong cong, thong thong
nang hoang » dang hoang, nang hang, quang hoang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trang cua » tranh cua, trung cua, thang cua
cong nang » cong ngang, cong lang, cong nong
hoang cao » hoang bao, hoang hao, hoang thao
tang cua » mang cua, hang cua, tang luan

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 manh) or (thien danh)) - hanh ((trang cua) OR (tang cua)) thong cong nang hoang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (thien danh)) - hanh ((trang cua) OR (tang cua)) thong cong nang hoang cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (thien danh)) - hanh ((trang cua) OR (tang cua)) thong cong nang hoang cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (thien danh)) - hanh ((trang cua) OR (tang cua)) thong cong nang hoang cao*.