Perhaps you should try some spelling variations:
thuat tach » thuat sach, thuat tac, thuat thanh
thuat mach » thuat sach, thuyet mach, thuat lanh
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
trinh han » trinh quan
han nhung » hanh nhung, hon nhung, ban nhung
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((thuat tach) or (thuat mach))) or (chiet tach)) - hanh trinh han nhung cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((thuat tach) OR (thuat mach))) OR (chiet tach)) - hanh trinh han nhung cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: ho ((((thuat tach) or (thuat mach))) or (chiet tach)) - hanh trinh han nhung cong tan van ban*.