Perhaps you should try some spelling variations:
truong thong » truong thuong, truong trong, truong phuong
thong dieu » trong dieu, nhung dieu, thong viet
dieu chinh » dieu hanh, dien hinh, dia chinh
thiet yeu » thiet ke
hanh tung » thanh tung, manh tung, hanh dung
hanh mang » nhanh mang, hanh trang, nhanh lang
xa truong » cac truong
chinh cau » chinh chau, chinh ca, chinh can
theo yeu » theo tieu, theo chu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thiet yeu) OR (theo yeu)) tinh - ((hanh tung) or (hanh mang)) xa truong thong dieu chinh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thiet yeu) OR (theo yeu)) tinh - ((hanh tung) OR (hanh mang)) xa truong thong dieu chinh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thiet yeu) OR (theo yeu)) tinh - ((hanh tung) or (hanh mang)) xa truong thong dieu chinh cau".
• Adding a wildcard symbol may retrieve word variants: ((thiet yeu) OR (theo yeu)) tinh - ((hanh tung) or (hanh mang)) xa truong thong dieu chinh cau*.