Perhaps you should try some spelling variations:
trinh luong » trinh duong, trinh huong, trinh xuong
nang quang » nang quan, dang quang, hang quang
luong xuan » luong quan, luong quang, luong cua
quang van » quang ban, quan van, quang uan
kiem soat » kiem toan
van bien » van tien, van hien, vat bien
mai kiem » may kiem, mang kiem, mai viet
ki nang » ky nang
bien so » bien doi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ki nang quang van bien so ) or ( trinh luong xuan mai kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ki nang quang van bien so ) OR ( trinh luong xuan mai kiem soat ))*.