Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
hanh manh » hanh mang, lanh manh, hoang manh
cong sang » cong lang, cong vang, cong bang
ho chieu » theo chieu, doi chieu, mot chieu
cong san » cong tac
than cau » toan cau, phan cau, than cap
manh va » hanh va, anh va, minh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (hoc thieu)) xanh - hanh manh va nhung ((cong sang) or (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - hanh manh va nhung ((cong sang) OR (cong san)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - hanh manh va nhung ((cong sang) or (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) xanh - hanh manh va nhung ((cong sang) or (cong san)) than cau*.