Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
canh trang » canh tranh, hanh trang, banh trang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
trang va » tran van, hang va
pho cau » pha cau, pho cam, pho can
ung » cung
dung » dcung

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 - canh trang va ((ung dung) or (thong cong)) thanh ((pho cau) or (pho cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh trang va ((ung dung) OR (thong cong)) thanh ((pho cau) OR (pho cap)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh trang va ((ung dung) or (thong cong)) thanh ((pho cau) or (pho cap))*.