Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
thanh tung » thanh cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
hang cong » dang cong, hang nong, bang cong
thanh cap » thanh lap, than cap, thanh ca
tung vap » tung va, trung van, tuong vao
vap hang » van hang, va hang, van khang
cong san » cong tac
hanh cap » hanh cac, hanh cat, hanh cad

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet tach - thanh tung vap hang cong san ((thanh cap) or (hanh cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - thanh tung vap hang cong san ((thanh cap) OR (hanh cap)).
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - thanh tung vap hang cong san ((thanh cap) or (hanh cap))*.