Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh nang » anh nang, ganh nang, hanh mang
trong san » trong cac, cong san, dong san
theo yeu » theo tieu, thiet yeu, theo chu
nang quy » tang quy, nhung quy, nang quan
quy dung » duy dung, qua dung, quyet dung
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (theo yeu)) xanh - hanh nang quy dung trong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo yeu)) xanh - hanh nang quy dung trong san van ban.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo yeu)) xanh - hanh nang quy dung trong san van ban*.