Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
trung cua » truong cua, trung tuan, trung cap
cua trong » cua truong, cua trung, qua trong
hieu luc » hieu luat
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan tap » toan tap, tuan tai, tuyen tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu luc) OR (hieu qua)) - hanh trung cua trong cong van tuan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu luc) OR (hieu qua)) - hanh trung cua trong cong van tuan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu luc) OR (hieu qua)) - hanh trung cua trong cong van tuan tap*.