Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh tang » hanh trang, hanh mang, hanh tung
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
anh tang » anh bang, anh dang, anh nang
cong anh » cong danh, dong anh, hong anh
quan cua » quan luan, ban cua, gian cua
tuan cu » tuan tu, tuan thu, than cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - ((hanh tang) or (anh tang)) quan dung cong anh ((tuan cu) OR (quan cua))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((hanh tang) OR (anh tang)) quan dung cong anh ((tuan cu) OR (quan cua)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - ((hanh tang) or (anh tang)) quan dung cong anh ((tuan cu) OR (quan cua))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((hanh tang) or (anh tang)) quan dung cong anh ((tuan cu) OR (quan cua))*.